Latin America's geography has affected its development through regionalism, resources, and important geographic features like mountains and rivers. Early civilizations like the Maya, Aztecs, and Inca adapted well to their environments but later declined due to factors such as disease and invasion. European colonialism shaped Latin America politically, economically, and socially from 1500-1825. Independence movements led the regions to gain freedom, but new nations struggled with dictators, economic reliance on cash crops, and powerful oligarchies. The United States established policies like the Monroe Doctrine and Good Neighbor Policy that influenced Latin America. Countries also dealt with issues like civil wars, drug cartels, deforestation, and revolutions.