Brazil Brazil. However, the decentralized and unorganized tendencies of the captaincy colonies proved problematic, and in 1549 the Portuguese king restructured them into the Governorate General of Brazil, a single and centralized Portuguese colony in South America. In the first two centuries of colonization, Indigenous and European groups lived in constant war, establishing opportunistic alliances in order to gain advantages against each other. By the mid-16th century, cane sugar had become Brazil's most important export, and slaves purchased in Sub-Saharan Africa, in the slave market of Western Africa (not only those from Portuguese allies of their colonies in Angola and Mozambique),
Brazil–Uruguay relations River and its tributaries, and tax exempted cattle and salted meat exports. The treaties also acknowledged Uruguay's debt to Brazil for its aid against the "Blancos", and Brazil's commitment for granting an additional loan. In addition, Uruguay renounced its territorial claims north of the Quaraí River, thereby reducing its area to about 176,000 square kilometers, and recognized Brazil's exclusive right of navigation in the Lagoa Mirim and the Jaguarão River, the natural border between the countries. In 1855, new conflict broke out between the parties. It reached its high point during the Paraguayan War. In 1863, the Colorado general Venancio