Answer:
Columbus' goal was not to prove the world was round but to find a westward sea route from Europe to Asia.
Step-by-step explanation:
Columbus' main goal was to find an easier way to get from Europe to Asia for Spain. At the time, the only way to get to Asia was by going around the Cape of Good Hope in Africa (which was rather dangerous due to currents) or to traverse from Europe to Asia (which took a lot of time and could also be dangerous). If Columbus could find a way to get to Asia for Spain, he could have access to spices and other goods that only could be found in that part of the world. This was a huge aim during the 15th century, though it was not achieved by Columbus, who only found the New World.