The encomienda system was a labor system instituted by the Spanish Crown in the American colonies.
Answer:
Tribes in Oklahoma Before Removal Wichita, Plains Apache (today's Apache Tribe), Quapaw, and Caddo tribes were here during the Spanish and French colonial period. By the early 1800s, the Osage, Pawnee, Kiowa, Comanche, Cheyenne, and Arapaho had also migrated into the region or visited to use resources.
Explanation:
The country that faced a unity crisis due to having a large variety of ethnic groups was D.)Austria-Hungary.
<h3>Which groups were in Austria-Hungary?</h3>
Austria-Hungary was an empire that comprised of several ethnic groups including Serbs, Bosnians, Croats, Hungarians, and Austrians.
These groups wanted independence for themselves and this led to a lot of strife in the empire.
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Absolute advantage is the ability of an individual to carry out a particular economic activity more efficiently than another individual group.