1. The enforcement of the Navigation acts
2. Mercantilism
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:
No taxation without representation" is a political slogan originating during the 1700s that summarized one of 27 colonial grievances of the American colonists in the Thirteen Colonies, which was one of the major causes of the American Revolution.
Explanation:
He requested a wagon or chariot (I believe).
The experiment inflicted harm on its participants