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:

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.

the answer is actually b.   as habitats are destroyed, animals and plants may become extinct.   , according to edge nuity