The above system of United States Constitution is showing three organs of the state i.e Legislative branch, Executive branch and the Judicial branch.
And below each division, their works are given. Aswecan were that, each of the organ is at same height which shows that they are practicing equal powers and they don't interrupt in each others work.
They practice the system of <u>Checks</u><u> </u><u>and</u><u> </u><u>Balances</u> to ensure that none of the organ is enjoying and grabbing too much.
So, the most appropriate option is:

Checks and balances system.
And, we are done !!
#CarryOnLearning...
<u>━━━━━━━━━━━━━━━━━━━━</u>
The correct answer is:
<h2>
C. To appeal to the dissatisfied, multi-ethnic population of the Soviet Union.
</h2>
Gorbachev was not trying "to establish his dominance," as the other answer here had suggested. When Gorbachev came into leadership in the USSR, the Soviet economy was struggling and there were dissidents across the spectrum of the country who called out for reforms and changes.
In 1985, Mikhail Gorbachev proposed policies of perestroika (restructuring) and glasnost (openness) in the Soviet Union. Perestroika meant allowing some measure of private enterprise in the Soviet Union. Glasnost meant allowing a bit of freedom in regard to speech and publication.
Army Corps of Engineers sometimes does its job threw war us army usually always does its work during war
Answer:
The main similarity the two shared was the fact that they were both violent uprisings located in China. Adding to this, they both used fighting in order to share their beliefs and disagreements with the way things were currently operating.