1775-1840: The Revolutionary Era

1841-1871: The Nation States

1873-1913: La Belle Epoque and Gilded Age

1914-1919: World War I

1920-1935: Interwar

1936-1945: World War II

1946-1959: Postwar Period

The 1960s

The 1970s

The End of the Cold War

Since 2000