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 its 281,612 inhabitants in 2018 lived in the metropolitan area of Cayenne, its capital. Since December 2015 both the region and the department have been ruled by a single assembly within the framework of a new territorial collectivity, the French Guiana Territorial Collectivity (). This assembly, the French Guiana Assembly (), has replaced the former regional council and departmental council, which were both disbanded. The French Guiana Assembly is in charge of regional and departmental government. Its president is Rodolphe Alexandre. Before European contact, the territory was originally inhabited by Native Americans, most speaking the Arawak language, of the