Cristóbal Mendoza of the Republic of Venezuela. In 1813 Mendoza fled a royalist invasion and moved to Grenada, and soon after he joined Simon Bolivar's effort to liberate South America from Spanish rule. Bolivar appointed Mendoza the governor of Mérida in May 1813, and Mendoza was appointed governor of Caracas several months later. Fleeing Venezuela again in 1814 when José Tomás Boves conquered Caracas, Mendoza moved to Trinidad, where from 1819 and 1820 he was an active political writer for the "Correo del Orinoco". In 1826, Francisco de Paula Santander appointed Mendoza as Mayor of the Department of Venezuela in the empire
History of South America the continent of North America via the Panama Block that closed the marine Bolivar Trough, leading to the Great American Interchange, the interchange of biota from both continents. The first species discovered to have made the northward migration was "Pliometanastes", a fossil ground sloth species, roughly the size of a modern black bear. Several migrations to the Southern Hemisphere were undertaken by tougher, North American mammal carnivores; fewer species migrated in the opposite direction from south to north. The result of the intrusion of North American fauna was that hundreds of South American species became extinct in a relatively short