Detailed Instructions: In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
Q: The Treaty of Tordesillas (Portuguese: Tratado de Tordesilhas (tɾɐˈtaðu ðɨ tuɾðɨˈziʎɐʃ), Spanish: Tratado de Tordesillas (tɾaˈtaðo ðe toɾðeˈsiʎas)), signed at Tordesillas on June 7, 1494, and authenticated at Setúbal, Portugal, divided the newly discovered lands outside Europe between the Portuguese Empire and the Crown of Castile, along a meridian 370 leagues west of the Cape Verde islands, off the west coast of Africa. This line of demarcation was about halfway between the Cape Verde islands (already Portuguese) and the islands entered by Christopher Columbus on his first voyage (claimed for Castile and León), named in the treaty as Cipangu and Antilia (Cuba and Hispaniola).
A:
who gave portugal a direct sea route to india