Essequibo River is a territory of Guyana
The Essequibo (in Spanish, Esequibo), is an undeveloped, sparsely populated but resource-rich jungle territory region, nearly sixty percent of modern Guyana, consisting of all its territory west of the Essequibo River (see map). Venezuela’s deeply rooted belief is that the Essequibo region was unjustly taken from them by meddling foreign powers. It is a matter of national integrity, made more alluring by the possible wealth of natural resources there. Guyana’s position is that they are trying to defend the land that has been part of their country for almost 200 years, land they need to help develop their country economically. The territorial dispute, dating back to the 1830s, has heated up in recent months, after Exxon Mobil, working for the Guyanese government, announced in May 2015 that it had discoverd a large reserve of oil in ocean waters off the disputed territory. [...] The Essequibo (in Spanish, Esequibo), is nearly sixty percent of modern Guyana, consisting of all its territory west of the Essequibo River. The Treaty of Munster nor the London Convention defined a western boundary of (the later called) British Guyana.