Brazil's largest trading partner is the United States, while Cuba's largest trading partner is Venezuela.
Which factor BEST explains why this is the case?
A) the creation of the North American Free Trade Agreement in 1994
B) the "Water War" that exists between Georgia, Alabama, and Florida
C) the 1991 Persian Gulf conflict and the 2003 U.S. invasion of Iraq
D) the embargo that the United States enforces against products from Cuba
