1. Before the drift of continents, the south american sub-continent was united with Africa. Hence some commonality if fauna and flora. 2. The sub-continent was firstly discovered by the navigators Mandingo (Empire of Mali) before Christopher Colombo who in his memoirs recognized having met people of black stock on the shore of the sea 3. Slavery has added a big genetic and religious distribution and today there are more cross-breed Brazilian than Caucasian. 4. These are few commonalities that warrant to see Brazil as the new expansion of Africa contrary to the northern American where African stock is a minority without any hope of expansion. Though we are all proud of President B. H Obama. But one tree can't constitute a forest.