Lateran Treaty: Italy and the Vatican formalized the Lateran Treaty, establishing Vatican City as a sovereign, independent state.
1945
Yalta Conference: Allied leaders Franklin D. Roosevelt, Winston Churchill, and Joseph Stalin convened at Yalta to plan the post-World War II order.
1975
Margaret Thatcher Leads Conservative Party: Margaret Thatcher made history as the first woman to become leader of the UK Conservative Party.
1990
Nelson Mandela Released: After 27 years in prison, Nelson Mandela was freed from Victor Verster Prison, marking a major step toward ending apartheid in South Africa.
2005
Ellen Johnson Sirleaf Elected President: Ellen Johnson Sirleaf became Africa’s first elected female head of state, assuming the presidency of Liberia.




