Based on historical accounts the United States expansion to the West created conflict between many cultural groups and nationalities.
- For example, Buffalo Soldiers were African American soldiers in the US Army who fought against the Native Americans to further the interests of the settlers and the US government.
- This is evident in the fact the African American soldiers of the all-Black 9th and 10th Cavalry Regiments were nicknamed the Buffalo Soldiers in 1866.
- During this period, the Buffalo Soldiers were given the task of protecting the Pacific Railroad construction.
- They also fought with some Native Americans such as Kiowas, the Comanches, the Cheyenne, and the Arapahoe.
Hence, in this case, the correct answer to the paragraph is "African American." and "Native Americans"
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