The document discusses the location, climate, and natural resources of Mexico, Venezuela, Brazil, and Cuba and how they affect where people live and trade. It notes that Mexico has a varied climate and most people live in the central region with fertile farmland. Mexico's key exports include oil, manufactured goods, fruits, and vegetables. Venezuela has a tropical climate and most people live along the northern coast; it relies heavily on oil exports. Brazil has a tropical climate and exports include coffee, soybeans, and oranges grown along the coasts. Cuba was influenced by its location on ocean trading routes and tropical climate; its economy previously relied on sugar exports and Soviet support.