B!
assimilate : <span>(of the body or any biological system) absorb and digest (food or nutrients)</span>
Answer:
... intelligent enough to continue to be united.
Explanation:
John Jay was one of the Founding Fathers of the U.S. He was in favor of a strong, centralized government. In this excerpt Jay makes the indirect statement <em>people of any country (if, like the Americans, intelligent and well informed)</em> that Americans can be considered as mentioned above.
Then he states that Americans, being intelligent and well informed, will continue to unite themselves under one federal government.