The Amero-Brazilian War was an extensive military conflict between NAFTA and MERCOSUR, two powerful trade blocs dominated by the United States and Brazil, respectively. The issue was control over Venezuela, which offered vast conventional oil reserves, in an age of petroleum depletion and energy crises. Venezuela had joined the NAFTA trade bloc in 2047, during the global recession, offering North America access to massive quantities of cheap petroleum as well as extensive mineral reserves. The dictator of Venezuela, Antonio Bracho, offered American corporations ownership and unfettered access to oil deposits. Meanwhile, the local population wanted closer ties to South America. The Venezuelan coup replaced Bracho with Armando Otero, a pro-Brazilian leader who pursued a closer relationship with MERCOSUR, the South American trade bloc. Otero signed a trade deal with Brazil, offering the use of its oil reserves, much to the behest of NAFTA. After the failure of a US-led invasion of Venezuela, NAFTA forces launched an extensive campaign in South America, fighting in Bolivia, Chile, Argentina, and eventually invading Brazil. Meanwhile, Brazil dominated the Gulf of Mexico, and eventually occupied parts of the Yucatan peninsula, before being expelled by Mexican forces. After years of fighting in Brazil, the NAFTA forces had reached the capital of Fortaleza. Admitting defeat, MERCUSOR forces relinquished control of Venezuela in the Treaty of Fortaleza, as well as agreeing to the payment of war reparations.