| Year Country existed | Country Name | % Correct |
|---|---|---|
| Present Day | Cambodia | 94%
|
| Present Day | Canada | 94%
|
| Present Day | China | 94%
|
| Present Day | Chile | 89%
|
| Present Day | Colombia | 89%
|
| Present Day | Comoros | 89%
|
| Present Day | Cameroon | 83%
|
| Present Day | Central African Republic | 83%
|
| Present Day | Chad | 83%
|
| 1990's | Congo | 83%
|
| Present Day | Croatia | 83%
|
| Present Day | Czech Republic | 78%
|
| Present Day | Costa Rica | 72%
|
| Present Day | Cuba | 72%
|
| Present Day | Cyprus | 67%
|
| Present Day | Cape Verde | 61%
|
| 1990's | Czechoslovakia | 61%
|
| 1970's | Ceylon | 28%
|
| 1960's | Cameroun | 6%
|
| 1900's | Champasak | 6%
|
| 1900's | Chokwe | 6%
|