AKA “The one [continent] that's thick at the top and thin at the bottom”.
Often times lumped in with Central America, South America is a whole collection of states that speak Spanish (with the exception of Brazil, Suriname, Guyana, and French Guiana) play football/soccer, and tend to be USA's playground whenever Communism/American interests come to play. Not surprisingly, there is a lot of resentment to the USA.
Many consider the boundary with North America to be at the Panama Canal, but it is actually at the Panama-Colombia border. Except, possibly, in TLs where Panama is still part of Colombia.
South America is known as a rather neglected area for AH, at least up to the present.