Why are americans dependent of what is produced in other countires ?

A. America only has so many resources and relies on imports for what it cannot produce.

B. Most Americans aren't the smartest. (don't write that, just me being overly political)

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.