The answer is A as river valley civilizations relied on rivers as a source of life. River valleys like Egypt, Mesopotamia and Xi, the rivers brought silt and made the soil very fertile, it also brought fresh water and fish to eat. People can also move fast using rivers.
Afghanistan, Syria and Turkey are the countries that were involved with the Persian Empire. (I learned this in 6th grade/social studies)
I guess the answer is D.Sir Walter Raleigh.
After the Big Bang many fascinating things occurred such as primordial nucleosynthesis, the creation of the lightest elements,
and more importantly to the question at hand the rapid expansion known as the inflation. According to
this theory the universe continued expanding though at the exponentially slower
rate. The theory of inflation’s origins can be traced back to 1979, to Cornell
where it was Alan Guth who first developed it.
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C - Because by saying "Disregard for Human Begins" Is stating that they don't care for the people or they're concerns.
