1373: Anglo-Portuguese Treaty of Perpetual Alliance (world’s oldest still in existence) signed in London between King Edward III of England and King Ferdinand I of Portugal

1866: US House of representatives passes 14th Amendment (Civil rights)

1878: Congress of Berlin begins, determines the territories of the states in the Balkan

1956: The last British troops leave the Suez Canal Zone in Egypt

2000: South Korean President Kim Dae-jung meets leader of North Korea Kim Jong-il, for the beginning of the first ever inter-Korea summit, in the northern capital of Pyongyang

Source: Onthisday.com