Today in history, Mu’awiya defeats Caliph Ali in the Battle of Siffin in Mesopotamia in 657.
Today in history, Francisco Pizarro receives a royal warrant to “discover and conquer” Peru in 1529.
Today in history, The Continental Congress establishes a postal system for the colonies with Benjamin Franklin (see picture below) as the first postmaster general in 1775.
Today in history, Liberia becomes the first African colony to become an independent state in 1847.
Today in history, The 19th Amendment to the U.S. Constitution is ratified in 1920.
Today in history, In an Executive Order, President Harry Truman calls for the end of discrimination and segregation in the U.S. armed forces in 1948.