Map supporting comments:
Brazil
Brazil is the sixth most populous country with most living along the coast line. Sao Paulo is the third largest city in the world. Brazil has many good ports and continues to expand them. The Amazon River, located along the Equator, is open to ocean going vessels over 700 miles inland where grain is loaded on them. Brazil has the largest number of cattle of any country. They have a very diverse cropping area. Rainfall varies with many areas receiving over sixty inches per year. It rarely freezes, even in southern Brazil. The capital of Brazil is Brasilia, which replaced Rio de Janeiro, which was the former capital. The capital was moved to encourage development in Brazil’s interior regions.
China
China is the most populous country in the world. It also has major portions of its country that are not easily inhabited. China has seven percent of the world’s arable land to feed twenty percent of the world’s population. China has very cold temperatures at higher elevations and northern parts of the country. Central China has areas of high population due to the agricultural production in these areas. China’s agriculture is very diverse and would be very competitive in the production of crops requiring large amounts of labor. Beijing is the capital located near the 40 degree North latitude.
USA
The United States has a very diverse agriculture. Although it is larger than Brazil it has fewer potential farm acres. Most of the land that can be cultivated is currently in crop production. The lower rainfall areas in the central region are planted to wheat, with corn and soybeans being the primary crops east of the Missouri River. Cotton, rice and tobacco are major economic crops in the south. The capital is Washington, D.C., located near the 37 degree North latitude. US agriculture is highly mechanized and is undergoing continued consolidation into larger farm units. Contract production is becoming more common in many of the different production enterprises. The USA has a Gross Domestic Product of over ten trillion dollars.