Events Pre-1600 1500 – Portuguese navigator Pedro Álvares Cabral lands in Brazil. 1519 – Spanish conquistador Hernán Cortés establishes a settlement at Veracruz, Mexico. 1529 – Treaty of Zaragoza divides the eastern hemisphere between Spain and Portugal along a line 297.5 leagues () east of the Moluccas. 1601–1900 1809 – The second day of the Battle of Eckmühl: The Austrian army is defeated by the First French Empire army led by Napoleon and driven over the Danube in Regensburg. 1836 – Texas Revolution: A day after the Battle of San Jacinto, forces under Texas General Sam Houston identify Mexican General Antonio López de Santa Anna among the captives of the battle when some of his fellow soldiers mistakenly give away his identity. 1864 – The U.S. Congress passes the Coinage Act of 1864 that permitted the inscription In God We Trust be placed on all coins minted as United States currency. 1876 – The first National League baseball game is played at the Jefferson Street Grounds in Philadelphia. 1889 – At noon, thousands rush to claim land in the Land Rush of 1889. Within hours the cities of Oklahoma City and Guthrie are formed with populations of at least 10,000. 1898 – Spanish–American War: President William McKinley calls for 125,000 volunteers to join the National Guard and fight in Cuba, while Congress more than doubles regular Army forces to 65,000. 1901–present 1906 – The 1906 Intercalated Games open in Athens. 1915 – World War I: The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres. 1930 – The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding. 1944 – The 1st Air Commando Group using Sikorsky R-4 helicopters stage the first use of helicopters in combat with combat search and rescue operations in the China Burma India Theater. 1944 – World War II: Operation Persecution is initiated: Allied forces land in the Hollandia (currently known as Jayapura) area of New Guinea. 1944 – World War II: In Greenland, the Allied Sledge Patrol attack the German Bassgeiger weather station. 1945 – World War II: Prisoners at the Jasenovac concentration camp revolt. Five hundred twenty are killed and around eighty escape. 1945 – World War II: Sachsenhausen concentration camp is liberated by soldiers of the Red Army and