What incorrect assumptions did Columbus make? Check all of the boxes that apply.

Columbus correctly understood that Earth is spherical, so A was not an incorrect assumption. He underestimated Earth’s size and believed there were no continents between Europe and Asia, which led him to expect a much shorter westward voyage. Thus the incorrect assumptions were that Earth was smaller than it really was and that no other land masses lay between Europe and Asia.

AI-written and checked against the verified answer.