The Monroe Doctrine granted the United States the ability to independently intervene in the trading economy. Having the ability to act alone and be neutral to war situations allowed them to make economic decisions based off of what they felt was best for them to prosper.
I think you forgot to add the options but based on my research, the correct answer to this question is "Middle colonies." This region included pine forests and marshes. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
Hard work was required to make progress
I'm not really sure if you need a broad or detailed definition of the policy, but I'm assuming you want a broad explanation.
The US Policy of Containment was a policy put forth during the Cold War to limit the influence of communism around the globe by attempting to prevent the spread of communism from Russia to other countries around the world. Hope that helps :)
