The Treaty of Tordesillas, signed on June 7, 1494, was a significant diplomatic agreement made between Spain and Portugal aimed at resolving disputes over newly discovered lands during the Age of Exploration. As both nations sought to expand their empires in the New World, tensions arose regarding territorial claims in the Americas. Pope Alexander VI played a crucial role in mediating these disputes, issuing a papal bull that proposed a line of demarcation. This line was initially set at 100 leagues west of the Azores but was later adjusted to 370 leagues to the west of the Cape Verde Islands, granting Portugal the eastern territories and Spain claim to the western lands.The treaty formalized the division of the New World and was significant in that it represented one of the earliest efforts to establish international laws governing colonial expansion. The agreement required both countries to honor the demarcation, but it did not account for the rights of indigenous peoples, whose lands were being claimed without their consent. Moreover, as other powers like France and England became involved in exploration, the treaty's relevance diminished, leading to conflicts over territory.While the treaty was signed in Spain, its implications were felt globally, as the exploration it encouraged led to the rapid colonization of the Americas, profoundly influencing cultural exchanges and the global balance of power. It marked the beginning of an era where European powers sought to stake their claims on newly discovered lands, ultimately leading to centuries of colonial rule.