I think XMOJO is correct.
Its D all of the above
Hope this helped :)
Answer:
He had believed he had landed in the indies
Explanation:
This is because Christopher Columbus had a route set for India but ended up landing in what we know today is America. Hence why he called the Native Americans who lived there, Indians.
Disease .................
The americans got the north western part of america but im not sure of the other question
