Cayman Islands
none (overseas territory of the UK)
Central African Republic
13 August 1960 (from France)
Chad
11 August 1960 (from France)
Chile
18 September 1810 (from Spain)
China
221 BC (unification under the Qin or Ch'in Dynasty 221 BC;
Qing or Ch'ing Dynasty replaced by the Republic on 12 February 1912;
People's Republic established 1 October 1949)
Christmas Island
none (territory of Australia)
Cocos (Keeling) Islands
none (territory of Australia)
Colombia
20 July 1810 (from Spain)
Comoros
6 July 1975 (from France)
Congo, Democratic Republic of the
30 June 1960 (from Belgium)