Roosevelt issued the essentially reinstated the monroe doctrine.

I believe the answer to this would be Roosevelt Corollary, as it's the only option of yours that's closely connected to the Monroe Doctrine.

kennedy used a range of this to develop a 'flexible response' plan for any international crisis. “he also expanded the it was important, because it ordered the fall of khruschev.

popular sovereignty   influenced the declaration of independence because the colonists wanted to have freedom to do they wanted so they put into writing