28 Jul 1914—11 Nov 1918: World War I World War I, often abbreviated as WWI, was a global conflict fought between two coalitions, the Allied Powers and the Central Powers. Fighting took place throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia
2
1929
1929—1939: The Great Depression Timeline of the Great Depression
3
1939
1 Sep 1939—2 Sep 1945: World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a global conflict that lasted from 1939 to 1945.
1898 - 1970 (71 years)