History of Portugal and the Treaty of Tortesias

Columbus made his first voyage in 14 92, discovering the island of hispaniola. The king of lisbon claimed legal title to columbus's discoveries after a furious round of diplomatic negotiations. Portugal was mostly focused on protecting their claim to the african coast and they demanded the latitudinal demarcation lines south of the canary islands not be disturbed. This new north south running line confer rmed portuguese hagemony over the afAfrican coast. But what no one realized at the time was that it left all north america and all but the brazilian bulge of south America on the spanish side of the line.