With the issuance of the monroe doctrine, was america a world power

Yes

Explanation:

The Monroe doctrine was to consider any European intervention in the destinies of American countries as a direct tort to the United States that would merit an immediate and forceful response.

With this policy, the United States secured a place of importance throughout the continent and European countries were threatened by it. This policy among others led to America being considered a nascent power.

d. migration of french settlers into english colonies

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939