mercosul, also known as the Southern Common Market, is a trading bloc and customs union consisting of the countries of argentina, bolivia, paraguay, uruguay, venezuela with associate members Bolivia, Chile, Colombia, Ecuador, and Peru.

to enter brazil, no passport is required from citizens of the six mercosulcountries- in fact, there is a particular ease of access traveling within and among these neighboring nations, as part of the free trade agreement that supports and promotes the easy movement of people, goods, and currency among these regions collectively grouped in the mercosul.