Columbus mistakenly thought that present day cuba was china because a. he didn’t know that the america’s existed b. he believed there was only one ocean c. he thought the world was much larger d. he didn’t have any experience navigating

It has to do with the route he took. Wanting a faster route to reach India for the Spanish Crown, he wanted  to make a chart of the western route to China, India, and fabled gold/ spice lands in Asia. Instead possibly by wind patterns Columbus ended up in the Brahamas to which made him think Cuba was actually China.

Rule C out

Rule D out

Im leaning towards B

The answer is actually A. he didnt know that the americas existed.

Explanation:

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

b.lincoln had the victory he wanted for emancipation