Which did the monroe doctrine declare about the united states?
a. it would oppose european attempts to colonize nations.
b. it would encourage european attempts to colonize nations.
c. it would take control of existing european colonies.
d. it would interfere in european conflicts.

The correct answer is A. The Monroe Doctrine was elaborated by John Quincy Adams and attributed to President James Monroe in 1823. The Doctrine reaffirms the position of the United States against European colonialism, inspired by the policy of George Washington.  

The positions of this doctrine can be summarized in three points:

- The rejection of any future European colonization in the New World.

- The abstention of the United States in the political affairs of Europe.  

- Disagreement with the intervention of Europe in the governments of the American hemisphere.

during the ming dynasty

thurgood marshall

explanation: in 1954, thurgood marshall and a team of naacp attorneys won brown v. board of education of topeka, kansas. in this landmark decision, the supreme court held that segregation in public education violated the equal protection clause of the fourteenth amendment.