Guiana Shield is equally rich and 13,367 species of vascular plants have been found, approximately 40% of which is considered endemic. The shield is overlain by the largest expanse of tropical forest on any Precambrian shield area in the world. Guianan rain forest is similar in nature to Amazonian rain forest and known protected areas include the Iwokrama Forest of central Guyana, Kaieteur, Kanuku National Park of southern Guyana, the UNESCO World Heritage Site Central Suriname Nature Reserve of Suriname, the Guiana Amazonian Park in French Guiana and the Tumucumaque National Park in the Amapá State of Brazil. In Venezuela the forests
British Guiana United Kingdom on 26 May 1966. The English made at least two unsuccessful attempts in the 17th century to colonise the lands that would later be known as British Guiana, at which time the Dutch had established two colonies in the area: Essequibo, administered by the Dutch West India Company, and Berbice, administered by the Berbice Association. The Dutch West India Company founded a third colony, Demerara, in the mid-18th century. During the French Revolutionary Wars of the late 18th century, when the Netherlands were occupied by the French, and Great Britain and France were at war, Britain took over