The Treaty of Madrid (also known as the Treaty of Limits of the Conquests) was an agreement concluded between Spain and Portugal on 13 January 1750. In an effort to end decades of conflict in the region of present-day Uruguay, the treaty established detailed territorial boundaries between Portuguese Brazil and the Spanish colonial territories to the south and west. Portugal also recognized Spain's claim to the Philippines while Spain acceded to the westward expansion of Brazil. The treaty included a mutual guarantee of support in case either state's American colonies were attacked by a third power.
Most notably, Spain and Portugal expressly abandoned the papal bull, Inter caetera, and the treaties of Tordesillas and Zaragoza as the legal basis for colonial division.
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