1536 - The Argentine city of Buenos Aires was founded by Pedro de Mendoza of Spain.
1848 - The Mexican War was ended with the signing of the Treaty of Guadalupe Hidalgo.
1863 - Samuel Langhorne Clemens used a pseudonym for the first time. He is better remembered by the pseudonym which is Mark Twain.
1878 - Greece declared war on Turkey.
1880 - The S.S. Strathleven arrived in London with the first successful shipment of frozen mutton from Australia.
1887 - The beginning of groundhog day in the US.
1892 - William Painter patented the crown-cork bottle cap.
1935 - Leonard Keeler conducted the first test of the polygraph machine, in Portage, WI.
1943 - During World War II, the remainder of Nazi forces from the Battle of Stalingrad surrendered to the Soviets. Stalingrad has since been renamed Volgograd.
1945 - U.S. President Roosevelt and British Prime Minister Winston Churchill left for a summit in Yalta with Soviet leader Josef Stalin.
1946 - The first Buck Rogers automatic pistol was made.
1962 - The 8th and 9th planets aligned for the first time in 400 years.
1989 - The final Russian armored column left Kabul, Afghanistan, after nine years of military occupation.
1990 - South African President F.W. de Klerk lifted a ban on the African National Congress and promised to free Nelson Mandela.