The lands to the east would belong to Portugal and the lands to the west to Castile. The treaty was signed by Spain, , and by Portugal, . The other side of the world was divided a few decades later by the Treaty of Zaragoza, signed on , which specified the to the line of demarcation specified in the Treaty of Tordesillas. Originals of both treaties are kept at the General Archive of the Indies in Spain and at the Torre do Tombo National Archive in Portugal.