North America

Civil Rights 20th Century North America

Sacco and Vanzetti Executed After Controversial Trial

In 1920s America, fears of radicalism, immigration, and anarchism ran high following World War I and the Russian Revolution. Italian immigrants Nicola Sacco, a shoemaker, and Bartolomeo Vanzetti, a fish peddler, both anarchists, were arrested in connection with a 1920 payroll robbery and murder in Braintree, Massachusetts. Their 1921 trial featured disputed ballistics evidence, eyewitness identifications later questioned, and judicial bias from Judge Webster Thayer, who openly expressed prejudice against their politics and ethnicity. Despite worldwide protests, appeals, and a 1927 review committee upholding the verdict, they were electrocuted at Charlestown State Prison just after midnight on August 23, 1927. Governor Michael Dukakis later issued a 1977 proclamation declaring the trial unfair.

Carving Begins on Mount Rushmore Sculpture

Sculptor Gutzon Borglum had long envisioned a massive monument in South Dakota's Black Hills to celebrate American presidents and attract tourism. After years of planning, site selection, and a dedication ceremony earlier in 1927, actual carving commenced on October 4. Workers used dynamite for the bulk of material removal on the granite face, followed by precise drilling and hand-finishing techniques. The project, funded through a mix of private and eventual federal support, aimed to depict George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln. Over the next 14 years, approximately 400 workers transformed the mountain despite challenging conditions and funding challenges.

The Jazz Singer Premieres as First Talkie

By the mid-1920s, Warner Bros. invested heavily in Vitaphone sound-on-disc technology to differentiate its films amid competition. The Jazz Singer, starring Al Jolson, adapted a stage play about a Jewish cantor's son pursuing a singing career. It premiered on October 6, 1927, at Warner's Theatre in New York City, featuring synchronized music, songs, and limited spoken dialogue. The film combined silent sequences with sound elements, drawing large audiences despite mixed critical reception. Its success validated the commercial potential of sound films.

Holland Tunnel Opens to Vehicular Traffic

New York and New Jersey authorities had long sought a direct vehicular link beneath the Hudson River to ease ferry congestion and support growing automobile use. Engineer Clifford Holland designed the project, which began construction in 1920 after his death was completed by successors including Ole Singstad. The twin tubes featured innovative ventilation systems to handle exhaust. Ceremonies occurred on November 12, 1927, with President Coolidge participating remotely. At midnight on November 13, the Holland Tunnel officially opened to traffic as the world's longest continuous underwater vehicular tunnel at the time, with thousands of cars lining up on the New Jersey side.

1928

Mickey Mouse Debuts in Plane Crazy Test Screening

Walt Disney and Ub Iwerks had been developing animated characters after losing rights to earlier creations like Oswald the Lucky Rabbit. Seeking a new star for their studio, they created a cheerful mouse inspired by pet mice and barnyard animals. On May 15, 1928, the silent short Plane Crazy received its first test screening before a theater audience in Hollywood, introducing Mickey Mouse and Minnie Mouse as they attempted aviation antics. The film failed to secure a distributor initially. It later received a sound version and wide release in 1929 after Steamboat Willie's success.

Other 20th Century North America

St. Valentine's Day Massacre in Chicago

During Prohibition, Chicago's organized crime syndicates battled for control of illegal alcohol distribution, with Al Capone's South Side Italian gang clashing against George "Bugs" Moran's North Side Irish gang. On the morning of February 14, 1929, seven men associated with Moran's operation gathered at a garage on North Clark Street. Four assailants, two dressed as police officers and two in civilian clothes, entered the premises, lined the victims against a wall under the pretense of a raid, and executed them with submachine guns and shotguns. The victims included Moran's key lieutenants; Moran himself narrowly escaped by arriving late. Capone was widely suspected of ordering the hit, though never convicted, intensifying public outrage over gang violence.

First Academy Awards Presented in Hollywood

As the film industry matured in the late 1920s with the transition to sound pictures, the Academy of Motion Picture Arts and Sciences sought to honor excellence and promote the art form. The inaugural ceremony took place on May 16, 1929, at the Hollywood Roosevelt Hotel before roughly 270 guests during a private dinner. Janet Gaynor received the first Best Actress award for performances in three films, while Emil Jannings won Best Actor; the event lasted only about fifteen minutes.

Civil Rights 20th Century North America

Persons Case Affirms Women as Legal Persons

In early twentieth-century Canada, the Famous Five—Emily Murphy, Nellie McClung, Irene Parlby, Louise McKinney, and Henrietta Muir Edwards—challenged barriers preventing women from Senate appointments under the British North America Act. The Supreme Court of Canada had ruled women were not “persons,” but the case reached the Judicial Committee of the Privy Council in Britain. On October 18, 1929, the Council reversed the decision, declaring that women qualified as persons eligible for public office. The ruling immediately opened pathways for female senators and broader civic participation. It marked a key victory after years of advocacy by the Alberta women.

Economics 20th Century North America

Black Thursday Stock Market Crash Begins

The 1920s had brought unprecedented stock market speculation in the United States fueled by easy credit, margin buying, and optimistic economic forecasts following World War I recovery. Warning signs emerged in September and early October as prices fluctuated wildly and some sectors showed weakness. On October 24, 1929, panic selling erupted on the New York Stock Exchange with a record 12.9 million shares traded and prices plunging sharply at the opening bell. Bankers attempted to stabilize the market by purchasing large blocks of stock, providing temporary relief, but the underlying lack of confidence persisted. The day became known as Black Thursday, marking the start of the broader Wall Street crash.

Economics 20th Century North America

Black Tuesday Stock Market Crash Begins Great Depression

The Roaring Twenties had fueled speculative investment in U.S. stocks, with prices detached from economic fundamentals amid rising unemployment, agricultural woes, and overproduction. After earlier warnings and a sharp drop on Black Thursday, panic selling intensified on October 29, 1929, as over 16 million shares changed hands on the New York Stock Exchange, erasing billions in value and leaving the ticker tape hours behind. Leading bankers attempted support but could not stem the tide, which continued for days and wiped out fortunes built on margin buying. The crash shattered public confidence in the financial system and exposed vulnerabilities in unregulated markets. Immediate effects included bank runs and business failures that rippled across the industrialized world.

Science 20th Century North America

1930

Clyde Tombaugh Discovers Pluto at Lowell Observatory

Astronomers in the early 20th century suspected an undiscovered planet beyond Neptune based on irregularities in the orbits of Uranus and Neptune, leading Percival Lowell to initiate a search for “Planet X” at his observatory in Flagstaff, Arizona. After Lowell’s death, the search continued with improved photographic techniques. On February 18, 1930, 24-year-old Clyde Tombaugh, working as an assistant, identified a moving object on photographic plates taken weeks earlier by comparing images with a blink comparator. Confirmation followed through additional observations, and the discovery was publicly announced in March. The tiny body, later named Pluto, expanded knowledge of the solar system’s outer reaches. Tombaugh’s methodical approach succeeded where prior efforts had failed.

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1931

Empire State Building Dedicated in New York

During the Great Depression, ambitious construction projects symbolized hope and American enterprise amid economic hardship. The Empire State Building site on Fifth Avenue was cleared after the Waldorf-Astoria hotel closed, and construction began in 1930 under a tight schedule to outpace competitors. On May 1, 1931, President Herbert Hoover dedicated the 102-story skyscraper from Washington by pressing a button to illuminate its lights, while ceremonies occurred in New York with Governor Franklin D. Roosevelt and others present. Completed in just over a year, it stood as the world's tallest building at the time. The opening drew massive public attention despite the era's challenges.

Politics 20th Century North America

1932

Franklin D. Roosevelt Elected U.S. President

Amid the depths of the Great Depression, with unemployment soaring and banks failing across America, incumbent Republican Herbert Hoover faced widespread discontent. Democratic candidate Franklin D. Roosevelt campaigned on a promise of bold action and a New Deal. On November 8, 1932, Roosevelt secured a decisive victory, carrying 42 states to Hoover's six and winning the popular vote by a wide margin. The election ended 12 years of Republican dominance in the White House and signaled a shift toward active federal intervention in the economy.

Golden Gate Bridge Construction Begins

After years of planning and political debate over funding and design, the Golden Gate Bridge project received final approvals in the early 1930s. On January 5, 1933, workers began the official start of construction by excavating millions of cubic feet of dirt for the massive anchorages on both sides of the strait. Chief engineer Joseph Strauss oversaw the ambitious suspension bridge design spanning the Golden Gate. The project employed thousands during the Great Depression and incorporated innovative safety measures, including a net that saved numerous workers. Construction concluded ahead of schedule in 1937.

Politics 20th Century North America

Franklin D. Roosevelt Inaugurated as President

The United States faced the depths of the Great Depression in early 1933, with widespread bank failures, unemployment exceeding 25 percent, and economic paralysis gripping the nation. Franklin D. Roosevelt had won the 1932 election promising bold action. On March 4, 1933, he took the oath of office at the Capitol in Washington, D.C., becoming the last president inaugurated on that traditional date before the Twentieth Amendment shifted inaugurations to January 20. In his address, Roosevelt delivered the famous line about fearing fear itself and outlined plans for immediate relief. Hours later, he appointed Frances Perkins as Secretary of Labor, the first woman in a U.S. cabinet position. The inauguration signaled a shift toward active federal intervention in the economy.

Exploration 20th Century North America

Wiley Post Completes First Solo World Flight

Aviation pioneer Wiley Post, already known for a 1931 around-the-world flight with a navigator, sought to prove solo long-distance capabilities in the interwar era. He departed New York's Floyd Bennett Field on July 15 in his Lockheed Vega monoplane, the Winnie Mae, equipped with an autopilot and radio direction finder. The route took him across Europe, Asia, and North America with stops for repairs and refueling. On July 22, Post landed back at Floyd Bennett Field after 15,596 miles in seven days, 18 hours, and 49 minutes, setting a new record. Crowds of 50,000 greeted his return, celebrating the technological demonstration of reliable solo navigation.

Politics 20th Century North America

United States Establishes Relations with Soviet Union

Following the 1917 Bolshevik Revolution, the United States had refused to recognize the Soviet government, citing ideological opposition and unpaid tsarist debts. By 1933, amid the Great Depression and rising threats from Nazi Germany and Imperial Japan, President Franklin D. Roosevelt sought to expand trade opportunities and counterbalance emerging powers. On November 16, 1933, the U.S. and USSR formally established diplomatic relations through an exchange of notes between Roosevelt and Soviet Foreign Minister Maxim Litvinov. The agreement included Soviet promises regarding religious freedoms for Americans in the USSR and settlement of certain financial claims. This step normalized ties after 16 years of non-recognition and opened avenues for economic and strategic cooperation.

Law 20th Century North America

Twenty-First Amendment Ends National Prohibition

The Eighteenth Amendment had banned the manufacture, sale, and transportation of alcohol across the United States since 1920, fueling organized crime, speakeasies, and widespread public discontent during the Roaring Twenties and Great Depression. In February 1933 Congress proposed the Twenty-First Amendment to repeal the ban, uniquely requiring ratification by state conventions rather than legislatures. On December 5 Utah became the thirty-sixth state to approve it, meeting the three-fourths threshold; Pennsylvania and Ohio had ratified earlier that day. Acting Secretary of State William Phillips certified the amendment at approximately 5:32 p.m. EST, and President Franklin D. Roosevelt quickly issued a proclamation ending national Prohibition. The repeal immediately allowed legal alcohol sales in most states and generated new tax revenue while diminishing...

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1935

Economics 20th Century North America

Roosevelt Signs Social Security Act

During the Great Depression, millions of elderly Americans faced poverty with no reliable retirement system, prompting President Franklin D. Roosevelt to push for federal social insurance as part of the New Deal. Congress passed the Social Security Act after intense debate over its scope and funding mechanisms. On August 14, 1935, Roosevelt signed the legislation into law in the presence of congressional leaders, establishing a national old-age pension system financed through payroll taxes on employers and employees. The act also created unemployment insurance and aid for the disabled and dependent children. It represented the first major federal commitment to economic security for ordinary citizens in the United States.

1936

Baseball Hall of Fame Elects First Members

By the 1930s, organized baseball sought to honor its pioneers and stars amid growing national popularity of the sport. A committee of baseball writers and officials selected the inaugural class through voting. On January 29, 1936, the National Baseball Hall of Fame announced its first five inductees: Ty Cobb, Babe Ruth, Honus Wagner, Christy Mathewson, and Walter Johnson. The elections established Cooperstown, New York, as the permanent home for the institution dedicated to preserving baseball history.

1936

Event Detail Free Speech Atlas

Margaret Mitchell Publishes Gone with the Wind

Atlanta journalist Margaret Mitchell had labored for years on a sweeping novel set during the American Civil War and Reconstruction, drawing from family stories and extensive research. On June 30, 1936, Macmillan published Gone with the Wind in a first edition of about 10,000 copies. The story of Scarlett O'Hara's survival amid war and social upheaval resonated immediately, becoming a massive bestseller that sold millions within months. It captured the Southern perspective and complex themes of resilience and change.

1936

Hoover Dam Begins Powering Los Angeles

Construction of Boulder Dam (later renamed Hoover Dam) on the Colorado River began in 1931 amid the Great Depression to control floods, provide irrigation, and generate electricity. On October 9, 1936, the dam's generators started transmitting power over 266 miles of lines to Los Angeles. The event was marked by a parade in the city celebrating the arrival of reliable electricity for homes and industry. The dam's output helped fuel Southern California's growth during and after World War II.

Disaster 20th Century North America

1937

Hindenburg Airship Destroyed by Fire

The LZ 129 Hindenburg, the largest rigid airship ever built, completed transatlantic passenger service for Nazi Germany's Zeppelin company. On its arrival at Naval Air Station Lakehurst, New Jersey, on the evening of May 6, 1937, the hydrogen-filled craft approached the mooring mast amid thunderstorms. A spark, likely from static electricity or a gas leak, ignited the flammable hydrogen and outer covering. The ship burst into flames and crashed in under a minute, killing 35 of the 97 people aboard plus one ground crew member. Dramatic newsreel footage captured the disaster live.

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1937

Golden Gate Bridge Opens to Pedestrians

After four years of construction amid the Great Depression, the Golden Gate Bridge linking San Francisco to Marin County stood ready. On May 27, 1937, officials declared Pedestrian Day, allowing roughly 200,000 people to cross the 1.7-mile span on foot from dawn onward in a festive atmosphere with vendors and celebrations. The suspension bridge, engineered by Joseph Strauss and others, featured innovative design elements that made it the longest of its kind at the time. Vehicular traffic followed the next day. The project came in ahead of schedule and under budget despite economic hardships.