The Cedula of Population of 1783 laid the foundation and growth of the population of Trinidad. The island's Spanish possessors contributed little towards advancements, with El Dorado the focus; Trinidad's geographical location made it the center of that focus. Following the Cedula, French planters (accompanied by their slaves, free coloreds and mulattos) from the French Antilles of Martinique, Grenada, Guadeloupe and Dominica migrated to the Trinidad. This exodus was encouraged due to the French Revolution. The Spanish also gave many incentives to lure settlers to the island, including exemption from taxes for 10 years and land grants in accordance to the terms set out in the Cedula. These new immigrants established local communities of Blanchisseuse, Champs Fleurs, Paramin, Cascade, Carenage and Laventille. Trinidad's population jumped from less than 1,400 in 1777, to over 15,000 by the end of 1789. In 1797, Trinidad became a British crown colony, with a French-speaking population.