The Treaty of Zaragoza was a pivotal agreement concluded in 1529 between Spain and Portugal, designed to delineate their respective spheres of influence in the eastern hemisphere. Following the earlier Treaty of Tordesillas of 1494, which divided the world between the two nations along a meridian, the Zaragoza treaty specifically focused on newly discovered territories in Asia, particularly the Spice Islands, known today as the Moluccas. The treaty established a line located 297.5 leagues, or approximately 1,250 kilometers, east of the Moluccas. This geographical determination was significant as it underscored the growing competition between Spain and Portugal for dominance in overseas trade and exploration. The negotiations were held in Zaragoza, Spain, where representatives from both kingdoms sought to address mounting tensions and disputes arising from explorations. The treaty highlighted the importance of the spice trade, which was a highly lucrative market for European powers during this period. By setting clear boundaries, the agreement aimed to prevent conflicts over territories, though it did not eliminate all disputes, as the era was marked by intense rivalry for colonial expansion. The influence of the Treaty of Zaragoza extended beyond its immediate geographical boundaries. Its establishment of an east-west division set precedents for future treaties and negotiations concerning colonial possessions and marked a significant moment in shaping European imperial strategies in Asia. Furthermore, it was part of the larger context of the Age of Discovery, characterized by European nations seeking new trade routes and territories, profoundly altering global trade dynamics and interactions.