Answer:
The Monroe Doctrine granted the United States the ability to independently intervene in the trading economy
Explanation:
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.
Other Puritans were convinced<span> that New </span>England<span> could provide a religious refuge, and the enterprise was reorganized as the Massachusetts Bay Company. In March 1629, it succeeded in obtaining from King Charles a royal charter for the establishment of the Massachusetts Bay Colony.</span>
The expansion of the railroads in the late 1800s was instrumental in helping the US economy boom. It did this in two ways. First, the railroads created a tremendous amount of demand for goods and labor on their own. As the railroads were being built, they needed huge numbers of people to build them.
Explanation:
Im not a 100% but i believe its Popular Sovereignty
The answer is D. HPV because there are no cures for it but many of the small infections go away on their own.