The correct answer is C. The Treaty of Tordesillas only allowed Spain to trade with its colonies in the New World and colonize new lands in the Americas west of the Line of Demarcation.
The agreement determined the line of division of the new world only between Portugal and Spain, with a meridian 1550 kilometers west of Cape Verde. The line was located on the 46th meridian, west of Greenwich, and represented one third of the distance from Cape Verde to the island discovered by Christopher Columbus on his first voyage.
According to this agreement, all the country that was located east of this line belonged to Portugal, and all the country that was located west, belonged to Spain.
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