1500
Exploration
Pedro Alvares Cabral Reaches Brazil
Portuguese navigator Pedro Alvares Cabral landed on the coast of Brazil, claiming the territory for Portugal. His discovery established Portuguese presence in the Americas.
On This Day in History
1793
Politics
George Washington Issues Proclamation of Neutrality
President Washington issued a proclamation declaring American neutrality in the European wars following the French Revolution. The policy set a precedent for American foreign policy.
1864
Politics
In God We Trust First Appears on U.S. Coins
The phrase 'In God We Trust' first appeared on United States coins, specifically the two-cent piece. Congress had authorized the motto during the Civil War.
1889
Exploration
Oklahoma Land Rush
At noon, thousands of settlers raced to claim land in the Oklahoma Territory in one of the largest land runs in history. An estimated 50,000 people participated in the chaotic event.
1915
War & Conflict
First Use of Poison Gas in Warfare at Ypres
German forces released chlorine gas against Allied troops at the Second Battle of Ypres in Belgium. The chemical attack killed thousands and introduced a terrifying new weapon of war.
1970
Science
First Earth Day Celebrated
Twenty million Americans participated in the first Earth Day, demanding environmental protection. The event catalyzed the modern environmental movement and led to the creation of the EPA.
2016
Science
Paris Climate Agreement Signed
World leaders signed the Paris Agreement on climate change at the United Nations. The landmark accord committed 196 countries to limiting global warming.