What information and experiences helped Columbus form his plan?

Christopher Columbus's plan was shaped by various factors, including his knowledge of maritime navigation, the writings of earlier explorers, and the growing European interest in trade with Asia. He was influenced by the accounts of Marco Polo and other explorers who described the riches of the East. Additionally, advancements in shipbuilding and navigation techniques, along with the sponsorship from the Spanish monarchy, provided him the resources to embark on his journey across the Atlantic in search of a westward route to Asia.