What did 1494's Treaty of Tordesillas accomplish for the Portuguese? Choose 1 Choose 1 (Choice A) A It created a vertical line through South America, giving Portugal the claim to the east coast of what is today Brazil (Choice B) B It ended the Eighty Years' War, freeing up Portugal's navy and allowing the nation's sailors to explore instead of fight (Choice C) C It gave Portugal the right to lay claim to nearly all of South America