Dutch colonisation of the Guianas control of the three colonies (Demerara, Berbice, and Essequibo) west of the Courantyne River. These three colonies became British Guiana. After 1815, there were five Guianas, referred to by their dominant languages: Spanish Guayana (Venezuela), British Guiana, Dutch Guiana, French Guiana, and Portuguese Guiana (Brazil). The colony that remained was part of the Kingdom of the Netherlands until 1975, when it became independent as the Republic of Suriname. Dutch Guiana covered the majority of the Guiana Shield, with its borders ranging from the Orinoco Delta in the northwest, the eastern banks of the Caroní River in the southwest, to the
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