| Reason | Signed | Location | % Correct |
|---|---|---|---|
| International treaty on climate change | 2015 | Paris | 95%
|
| Declaration of peace after World War I | 1919 | Versailles | 76%
|
| Agreement on collective defense between countries of the Eastern Bloc | 1955 | Warsaw | 70%
|
| Organization of the Holocaust | 1942 | Wannsee | 57%
|
| Postwar reorganization of Germany | 1945 | Yalta | 54%
|
| Meeting of the Big Three to discuss postwar order | 1945 | Potsdam | 51%
|
| Reconstitution of European political order following Napoleon's downfall | 1815 | Vienna | 49%
|
| Foundation of the European Union | 1992 | Maastricht | 46%
|
| Foundation of sovereign Bosnia and Herzegovina | 1995 | Dayton | 43%
|
| Creation of the European Economic Community | 1957 | Rome | 43%
|
| Division of America between Portugal and Spain | 1494 | Tordesillas | 43%
|
| Definition of refugees and the terms for granting asylum | 1951 | Geneva | 41%
|
| Negotiation between Israel and Palestine resulting in bilateral recognition | 1993 | Oslo | 41%
|
| Amendment of treaties concerning the European Union | 2007 | Lisbon | 38%
|
| Re-establishment of peaceful relations between Japan and the U.S. | 1951 | San Francisco | 27%
|
| Partitioning of Poland and agreement on non-aggression | 1939 | Moscow | 24%
|
| Peace agreement after the Thirty Years War | 1648 | Osnabrück | Münster | 19%
|
| Acceptance of Philip V's succession to the Spanish throne | 1715 | Utrecht | 16%
|
| Rental agreement for the Canal Zone between Panama and the U.S. | 1903 | Washington, D.C. | 11%
|
| Declaration of laws of war upon the advice of Tsar Nicholas II | 1899 | The Hague | 3%
|