It can be a large waterfall or it can be a medical condition in which the lens of the eye becomes constantly opaque, which is a result of, blurred vision.
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Answer:
The scientific method.
Explanation: . . . . . . . .
The encomienda system allowed a colonist to enslave Native Americans, so the end of this system brought about a new search for slaves, eventually leading to the enslavement of Africans.