Dutch colonisation of the Guianas Marajó island of the Amazon river delta in the southeast. Although the Dutch colony of Surinam has always been officially known as Surinam or Suriname, in both Dutch and English, the colony was often unofficially and semi-officially referred to as Dutch Guiana (Dutch: "Nederlands Guiana") in the 19th and 20th century, in an analogy to British Guiana and French Guiana. Using this term for Suriname is problematic, however, as historically Suriname was only one of many Dutch colonies in the Guianas, others being Berbice, Essequibo, Demerara, and Pomeroon, which after being taken over by the United Kingdom in 1814, were
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