Why do Brazilians speak Portuguese and not Spanish

South America was divided between the Spanish and Portuguese along some meridian on June 7, 1494, when the governments of Spain and Portugal agreed to the Treaty of Tordesillas, making the Eastern part being Portuguese territory and the Western part being Spanish territory.

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

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i googled "who was kolson johanson" and this is the answer i found.

sorry if this is incorrect.

a.) are both appointed for life