Mexico, Venezuela, Brazil, and Cuba have location, climate, and natural resources that influence where people live and how they trade. Mexico has access to major waterways and close proximity to the US, supporting trade. Most Mexicans live in arable central regions. Oil is a key export. Venezuela has access to oceans and is a top oil exporter, though reliance on oil causes problems. Brazil has climate and resources supporting agriculture and is a top farm exporter. Most Brazilians live along coasts. Cuba has a tropical climate and exports sugar, though its communist system and isolation cause economic difficulties.