Summarize how the treatment of African American soldiers in the Union army changed as the war progressed.

African American soldiers played a very important role in the Union Army during the Civil War, since they formed several active combatant groups that waged important battles against the Confederacy, and many of them did important work in non-combat roles as well.  

Explanation:

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.

china has confucianism thats everywhere in asia but it isn't really a religion.