what caused Columbus to think he reached Asia
A his ships were pushed far off course by storms.
B the people he met told him he was in Asia.
C he made the mistakes in estimating the size of the earth.
D his crew made mistakes in using their navigational instruments.
Columbus knew that the world was round and realised that by sailing west - instead of east around the coast of Africa, as other explorers at the time were doing - he would still reach his destination.
