Year

1990

2 sourced events from this year.

Events

1990 Timeline

All Years

Military20th CenturyMiddle East & North Africahigh

Iraq Invades Kuwait, Sparking Gulf War

Tensions over oil production quotas, debt from the Iran-Iraq War, and territorial disputes had escalated between Iraq and Kuwait by mid-1990. On August 2, Iraqi forces under Saddam Hussein launched a rapid invasion, overwhelming Kuwaiti defenses and occupying the country within hours. The United Nations Security Council immediately condemned the action and demanded withdrawal. The invasion led to the establishment of a short-lived puppet government and the flight of the Kuwaiti royal family. International coalitions began forming in response, setting the stage for military intervention months later.

Why it matters: The invasion triggered the Persian Gulf War, reshaped Middle East alliances, demonstrated the post-Cold War international order through UN-backed coalition action, and established precedents for responses to aggression over resources.

Science20th CenturyNorth Americahigh

Most Complete T. rex Skeleton Found

Paleontologist Susan Hendrickson was prospecting in the badlands near Faith, South Dakota, when she spotted three large bones protruding from a cliff face on August 12, 1990. The find belonged to a Tyrannosaurus rex that had died approximately 67 million years earlier. Excavation over subsequent months revealed a remarkably complete and well-preserved skeleton, later named "Sue" after its discoverer, with over 90 percent of the bones recovered. The specimen provided unprecedented insights into the anatomy and biology of the iconic dinosaur.

Why it matters: Sue became one of the most studied and exhibited T. rex fossils, advancing scientific understanding of theropod dinosaurs and inspiring public interest in paleontology through displays at major museums worldwide.