D) the great plains is the answer I believe to be correct. I feel the great plains needed this help.
Answer:
The Senate
Explanation:
House of Representatives elect members based off city population and importance so it would be over 100. The Senate elect 2 members per state. There are 50 States in the U.S.A. 2 times 50=100.
assuming efficiency of each man to dig trench, in one day, for one hour is constant,

so one man, working for one hour in one day can dig 1.5 m
so 8 men, working 3 hours a day and will take, say $d$ number of days and efficiency will be constant. so,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
Answer:
<u>C. China is ruled by a series of imperial dynasties for thousands of
</u>
<u>years.</u>
Explanation:
Chinese civilization is more than 5,000 years old, and according to ancient Chinese records, the oldest Chang Dynasty was formed in 1766 B.C., although many historians and archaeologists believe it happened a little later. The last Chinese Qing Dynasty ruled until 1911, which indicates a historical continuity that lasted more than 3,500 years.
USA intervened in Korea and Vietnam as war efforts and in Greece and Turkey as coups.
Explanation:
In Turkey the US government aided a coup by the military to overthrow the government which in turn led to a regressive government to be placed in there.
A similar thing happened in Greece when a socialist party was elected into the Country with affiliations or alleged ones with the Soviet Union.
Korea was invaded by the USA in support of the south during the Korean war so as to stop the communist North from taking over all of the Korea under the influence of USSR.
Similar thing happened in Vietnam but it was not successful and Vietnam did fall to the communist army after US departure.