Since its independence in 1824, Venezuela has claimed the area of land to the west of the Essequibo River. Simón Bolívar wrote to the British government warning against the Berbice and Demerara settlers settling on land which the Venezuelans, as assumed heirs of Spanish claims on the area dating to the 16th century, claimed was theirs. In 1899, an international tribunal ruled that the land belonged to Great Britain. The British territorial claim stemmed from Dutch involvement and colonization of the area also dating to the 16th century, which was ceded to the British.