New findings challenged what we knew about insect origins
A new chapter in Mars exploration
The US entered World War I
One presidential decision changed US politics forever
The assassination that changed the Civil Rights Movement forever
US took a bold step to revive post-war Europe
US President Woodrow Wilson urged Congress to declare war on Germany
The email revolution began
A legendary vessel bade farewell to the seas
John Hinckley Jr. shot President Ronald Reagan
US combat troops departed Vietnam
A Nazi propaganda film debuted
