Daily Digest
On This Day: May 15
May 15 marks several pivotal moments in global history, from European diplomacy and colonial conflicts to American founding steps, cultural innovations, and wartime contributions by women.
Cross-Year Timeline
May 15 Across The Years
Digest Entries
Selected Events
Peace of Münster Ratified Ending Eighty Years' War
The Eighty Years' War between Spain and the Dutch Republic had dragged on since 1568, fueled by religious differences, economic rivalries, and Spanish attempts to maintain control over the Low Countries. Dutch forces achieved significant military successes, but full independence remained elusive amid broader European conflicts like the Thirty Years' War. On May 15, 1648, in Münster, Dutch and Spanish envoys formally ratified the Peace of Münster with oaths before a large crowd, recognizing the sovereignty of the United Provinces. This separate treaty preceded the broader Peace of Westphalia later that year. The ratification ended hostilities and granted the Dutch Republic formal independence from the Spanish Habsburgs.
Why it matters: The treaty established the Dutch Republic as an independent power, enabling its golden age of trade, science, and art that influenced European development. It contributed to the modern state system by affirming principles of sovereignty later enshrined in the Westphalian order.
Britain Declares War on France Igniting Seven Years' War
European colonial rivalries intensified in the mid-18th century as Britain and France competed for dominance in North America, India, and the Caribbean following earlier conflicts like the War of the Austrian Succession. Tensions escalated with French advances in the Ohio Valley and naval buildups. On May 15, 1756, Britain formally declared war on France, marking the official start of the Seven Years' War in Europe. The declaration came after months of skirmishes and followed France's alliance with Austria. It transformed localized colonial fighting into a worldwide conflict involving multiple European powers.
Why it matters: The war redrew colonial maps, with Britain gaining vast territories in North America and India while weakening France, setting stages for the American Revolution and later global power shifts. It established Britain as the preeminent colonial empire for decades.
Virginia Convention Calls for Colonial Independence
By spring 1776, the American colonies faced irreconcilable conflict with Britain after the rejection of the Olive Branch Petition and increasing military actions. Virginia's Fifth Revolutionary Convention met in Williamsburg amid debates over reconciliation versus separation. On May 15, 1776, delegates unanimously passed resolutions instructing Virginia's Continental Congress delegates to propose declaring the United Colonies free and independent states, absolved from allegiance to the British Crown. They also authorized a committee to draft a declaration of rights and state constitution. This action positioned Virginia at the forefront of the push for independence.
Why it matters: Virginia's resolutions provided the crucial momentum for the Lee Resolution and Declaration of Independence weeks later, shaping the legal and philosophical foundations of the United States. They inspired similar steps in other colonies and influenced state constitutions.
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.
Why it matters: Plane Crazy launched one of the most enduring entertainment franchises, revolutionizing animation with personality-driven characters and paving the way for synchronized sound cartoons that dominated popular culture worldwide.
Women's Army Auxiliary Corps Bill Signed into Law
Following the U.S. entry into World War II after Pearl Harbor, manpower shortages prompted calls for women to serve in noncombat roles to free men for overseas duty. Congresswoman Edith Nourse Rogers had introduced legislation in 1941, but progress accelerated with the war. On May 15, 1942, President Franklin D. Roosevelt signed the bill creating the Women's Army Auxiliary Corps, granting women official military status though initially as auxiliaries without full benefits. Over 35,000 women soon enlisted for roles in administration, mechanics, and communications. The WAAC later evolved into the Women's Army Corps with expanded rights.
Why it matters: The WAAC marked a major expansion of women's roles in the U.S. military, contributing to the war effort and advancing gender integration in the armed forces that influenced postwar policies and equal opportunity debates.