Guayana Esequiba

Guayana Esequiba (Spanish pronunciation: [ɡwaˈʝana eseˈkiβa]) is a territory administered by Guyana and claimed by Venezuela.

The territory was first included in the Viceroyalty of New Granada and the Captaincy General of Venezuela by Spain, but was later included in Essequibo by the Dutch and in British Guiana by the United Kingdom. Originally, parts of what is now eastern Venezuela were included in the disputed area. The portion today under the administration of Guyana divides the area in six administrative regions (Barima-Waini, Cuyuni-Mazaruni, Pomeroon-Supenaam, Potaro-Siparuni, Upper Takutu-Upper Essequibo and Essequibo Islands-West Demerara), while Venezuela treats it as a single entity (Guayana Esequiba or "Zona en Reclamación"). This territory of 159,500 km² is the subject of a long-running boundary dispute inherited from the colonial powers and complicated by the independence of Guyana in 1966. The status of the territory is subject to the Treaty of Geneva, which was signed by the United Kingdom, Venezuela and British Guiana governments on February 17, 1966. This treaty stipulates that the parties will agree to find a practical, peaceful and satisfactory solution to the dispute.

In 1648 Spain signed the Peace of Münster with the Dutch Republic, whereby Spain recognized the Republic's independence and also small Dutch possessions located east of the Essequibo River, which had been founded by the Dutch Republic before it was recognised by Spain. However, few decades after the Peace of Münster, the Dutch began to spread gradually west of the Essequibo River, inside the Spanish Guayana Province. These new settlements were regularly contested and destroyed by the Spanish authorities.

...
Wikipedia