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
French Guiana and the European Space Agency (ESA). In the late 1970s and early 1980s, several thousand Hmong refugees from Laos immigrated to French Guiana, fleeing displacement after United States involvement in the Vietnam War. Fully integrated in the French central state in the 21st century, Guiana is a part of the European Union, and its official currency is the euro. The region has the highest nominal GDP per capita in South America. A large part of Guiana's economy derives from jobs and businesses associated with the presence of the Guiana Space Centre, now the European Space Agency's primary launch site near