| Event | Year |
| Berlin Wall built | |
| Hitler becomes German chancellor | |
| Balkan Wars | |
| European Union grows to 27 countries | |
| End of Habsburg rule in Austria | |
| Spanish Civil War | |
| Year of Revolutions | |
| End of Ottoman Empire | |
| French 4th Republic | |
| Russian Revolution of 1905 | |
| Germany reunites | |
| Eastern European Communism collapses | |
| USSR collapses | |
| Most countries adopt the Euro as currency | |
| | Event | Year |
| Berlin Wall falls | |
| Great Depression begins | |
| Mussolini takes power in Italy | |
| Russian Revolution | |
| East Germany revolts against USSR | |
| D-Day | |
| WWII | |
| Boxer Rebellion | |
| End of Hohenzollern rule in Germany | |
| WWI | |
| Berlin Airlift | |
| Czechoslovakia revolts against USSR (Prague Spring) | |
| Hungary Revolts against USSR | |
| French 5th republic | |
|