British Guiana Kingdom, finally made formal claim to the "New River Triangle", the triangular-shaped region between the New and Kutari rivers that was in dispute. The Surinamese colonial government and, after 1975, the independent Surinamese government, maintained the Dutch position; while the British Guiana Government, and later the independent Guyanese government, maintained the British position. British Guiana is famous among philatelists for its early postage stamps, which were first issued in 1850. These stamps include some of the rarest, most expensive stamps in the world, such as the unique British Guiana 1c magenta from 1856, which was sold in 2014 for US$9.5
French Guiana French overseas departments. It is largely responsible for the rapid population growth of French Guiana. The official language of French Guiana is French, and it is the predominant language of the department, spoken by most residents as a first or second language. In addition, a number of other local languages exist. Regional languages include Guianan Creole, six Amerindian languages (Arawak, Palijur, Kali'na, Wayana, Wayampi, Emerillon), four Maroon creole languages (Saramaka, Paramaccan, Aluku, Ndyuka), as well as Hmong Njua. Other languages spoken include Portuguese, Hakka, Haitian Creole, Spanish, Dutch, English, and Tamil, and Caribbean Hindustani. French Guiana, as part of France,