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 of camps and penitentiaries along the coast where prisoners from metropolitan France were sentenced to forced labor. During World War II and the fall of France to German forces, Guianan Félix Éboué was one of the first to support General Charles de Gaulle of Free France, as early as June 18, 1940. Guiana officially rallied Free France in 1943. It abandoned its status as a colony and once again became a French department in 1946. After De Gaulle was elected as president of France, he established the Guiana Space Centre in 1965. It is now operated by the CNES, Arianespace