Event Leading to US Entry into WWII
First Country to Legalize Same-Sex Marriage
Assassination Triggering WWI
First African Country to Gain Independence Post-WWII
First Use of Atomic Bomb
Berlin Conference, 1884-1885
Concept of Social Contract
Fall of the Berlin Wall
Event Signifying the Start of the Space Race
Chinese Cultural Revolution Start
Founder of Facebook
Climate Change Key Agreement
First Man on the Moon
Event Leading to End of Cold War
First Person in Space
Axis Powers in WWII
First Female British Prime Minister
Decolonization in Africa and Asia, Peak
Cuban Missile Crisis, Year
Event Symbolizing End of Soviet Control in Eastern Europe
Declaration of the Rights of Man and of the Citizen, Year
9/11 Attacks Location
D-Day Invasion, Year
First Industrialized Country
End of Apartheid in South Africa