Access to adequate food is the primary concern for most countries; thus, agriculture is one of the most important industries in the world. The security and health of population has lowered the price of manufactured products relative to agricultural products. Brazil is among the top exporters of agricultural products in the whole world, an area in which the United States had been a major exporter. Usingmanufactured goods and agricultural products as tradable goods, create a standard trade model for the United States and Brazilian economies that show how a decline in relative prices can reduce welfare in the United States and increase it in Brazil.