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The Tordesillas Treaty of June 7, 1494, between King Ferdinand II of Aragon and Queen Isabella I of Castile, on one side, and King John II of Portugal on the other, established a new line of demarcation between the two crowns, running from pole to pole, 370 leagues to the west of the Cape Verde Islands. The treaty was finally signed after complex diplomatic negotiations between ambassadors and lawyers of both kingdoms. The modification of the demarcation line that divided the world between Spain and Portugal resulted in the birth of Brazil, given that its eastern extension fell within the Portuguese zone. This document is indispensable for understanding American history and the economic and cultural relations between Europe and America. The treaty became an important reference point, not only for the history of the Atlantic Ocean but also for the memory of the world, by enabling the meeting of conti-nents and civilizations separated by uncharted oceans.

This nomination was Inscribed on the Memory of the World International Register in 2007 and on the Regional Register for Latin America and the Caribbean in 2011.