To prevent interminable war between the two over who could explore where.
Spain and Portugal divide the Americas by a line called the demarcation. that Pope Alexander decided where to put it.
The role of Pope Alexander VI in keeping peace between Spain and Portugal by advancing the Treaty of Tordesillas.
The line determined by Pope Alexander the sixth which split South America between Spain and Portugal is named the Line of Demarcation.
The agreement was called the Treaty of Tordesillas. It did not divide wealth specifically, rather it was the first attempt to divide the spheres of influence in the New World between Portugal and Spain.
It was Pope Alexander VI.
May 4, 1493 in HistoryEvent: Spanish Pope Alexander VI divides America between Spain and Portugal
He divided the extra-European world between Spain and Portugal in the bull Inter caetera (1493).
Actually Spain and Portugal wanted the lands Christopher Columbus discovered and would even fight for it. Later Pope Alexander VI settled the problem by making a boundary for Spain and Portugal.
Spain and Portugal
provision of treaty of tordesillas to divide the Americas between Spain and Portugal to colonize.
The Treaty of Tordesillas was the first attempt to divide the Americas between Spain and Portugal.Treaty of Tordesillas
Portugal is west of Spain, between Spain and the Atlantic Ocean.