| Year(s) | Cause | Responsible | Answer | % Correct |
|---|---|---|---|---|
| 1945 | WF | USA | Japan | 99%
|
| 1949-1990 | T | Russia | Russia | 94%
|
| 1945-1992 | T | USA / UK | United States of America | 91%
|
| 1964-1967 | T | China | China | 84%
|
| 1966-1970 | T | France | France | 84%
|
| 2004-2017 | T | North Korea | North Korea | 84%
|
| 1974-1998 | T | India | India | 83%
|
| 1998 | T | Pakistan | Pakistan | 82%
|
| 1972 | T | Russia | Ukraine | 68%
|
| 1949-1989 | T | Russia | Kazakhstan | 67%
|
| 1950 | BA | USA | Canada | 64%
|
| 1952-1963 | T | UK | Australia | 57%
|
| 1968 | T | Russia | Uzbekistan | 50%
|
| 1951-1954 | T | USA | Marshall Islands | 48%
|
| 1972 | T | Russia | Turkmenistan | 47%
|
| 1966 | BA | USA | Spain | 45%
|
| 1960 | T | France | Algeria | 40%
|
| 1979 | U | Unknown | South Africa | 40%
|
| 1957 | T | UK | Kiribati | 35%
|