Dutch Empire lost a number of its colonial possessions and trade monopolies to the British Empire. Nevertheless, major portions of the empire survived until the advent of global decolonisation following World War II (1939–1945), namely the East Indies (Indonesia) and Dutch Guiana (Surinam). Three former colonial territories in the West Indies islands around the Caribbean Sea—Aruba, Curaçao, and Sint Maarten—remain as constituent countries represented within the Kingdom of the Netherlands. The territories that would later form the Dutch Republic began as a loose federation known as the Seventeen Provinces, which Charles V, Holy Roman Emperor and (as "Carlos I") King of Spain,
British Guiana in the Anglo-Dutch Treaty of 1814. The UK continued separate administration of the individual colonies until 1822, when the administration of Essequibo and Demerara was combined. In 1831, the administration Essequibo-Demerara and Berbice was combined, and the united colony became known as British Guiana. The economy of British Guiana was completely based on sugarcane production until the 1880s, when falling cane sugar prices stimulated a shift toward rice farming, mining and forestry. However, sugarcane remained a significant part of the economy (in 1959 sugar still accounted for nearly 50% of exports). Under the Dutch, settlement and economic activity was concentrated