Answer:
A. This was when the first written language appeared.
Explanation:
The term history is associated to the appearance of writing, therefore, prehistory refers to the period before (pre) writing existed.
In the case of 3200 BCE, it corresponds to the ancient civilization known as Mesopotamia. There, a group called the Sumerians developed the world's first known writing system called cuneiform. This was a pictographic system that was traditionally inscribed on clay tablets.
A flexible expense is something that can be changed at any time. Vacation savings fits the mold of this, as it can be changed. It is not desperately needed, unlike the others.
Answer: The Watergate scandal impacted the United States by changing American politics forever. Now many American question leaders more often and focus on the presidency election more critically.
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C is the main one, but D is also very important (see The Voting Rights Act)
Answer:
3/4 of the states must ratify the amendment (37.5 states which rounds up to 38 states needed)
