Regardless to the spread of more organized religions and belief systems shamanism and animism remained major forces in the lives of people living between ca. 600 bce and ca 600 ce because
a. the rise of logic had been thoroughly dismissed
b. none of the universal religions has developed
c. there was a declined in beliefs concerning magic and other worldliness
d. people continues to rely on the natural world

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.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.