Why did Isabella fiance Columbus' voyage to the explore new trade routes?

Queen Isabella of Castile sponsored Christopher Columbus's voyage primarily to find new trade routes to Asia. At the time, European nations were eager to establish direct access to lucrative spices and silks, which were in high demand. Columbus's plan presented a westward route to reach these markets, offering the potential for economic gain and increased prestige for Spain. Additionally, Isabella aimed to expand Spain's influence and spread Christianity in newly discovered lands.