if you're using plato/edmentum, the answer is A.
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...
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Answer:
E. it aided the election of Ulysses Grant to the presidency in 1868.
Explanation:
Following the end of the Civil War, fifteen amendment was passed in 1870, which extended the voting rights to African-Americans. It states that no government or state shall deny the voting rights of the citizens of the country based on their color, race or previous condition of servitude. The amendment proved vital for the reelection of the Republican party.
After the fall of the Roman Empire, Charlemagne became king of the Frankish people in the year 751. He had the main belief of unifying all Germanic peoples and convert them to Christianity. Other important beliefs he had were the revival of culture and education which had been relegated during the dark ages. Thanks to these beliefs, Charlemagne got to control a large part of Europe. They are important for a ruler since promoting education within it citizens helps the development of a society. The firm belief he had in uniting all peoples is represented in many rulers that followed him like Napoleon; it is an important principle to consolidate a government and peace in a territory. Another example that he set for future leaders is the ability to make strategic alliances, the one he made with the Catholic Church eventually turn him into the holy roman emperor.
That pretty Much started WW1. That"s a major consequence