Buffalo Soldiers, who formed the first peacetime all-black regiments in the regular US Army, were freed slaves commissioned to fight ​​​​​​​Native Americans.

​​​​​​​Confederate soldiers.

​​​​​​​Mexicans.

​​​​​​​outlaws.

Native Americans

Explanation:

In 1866, six all-Black cavalry and infantry regiments were created after Congress passed the Army Organization Act. Their main tasks were to help control the Native Americans of the Plains, capture cattle rustlers and thieves and protect settlers, stagecoaches, wagon trains and railroad crews along the Western front.

answer; /// i believe that the correct answer is (b)///they gained vast amounts of

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

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i googled "who was kolson johanson" and this is the answer i found.

sorry if this is incorrect.