What is the purpose on Monroe Doctrine A. it was a treaty for the United States to buy land
B. it increase trade with other nations in Europe and Asia
C. it warned European nations to stay away from Westerns nations
D. it was a policy to increase the size of the U. S. military.

Roman builders used rows of arches in there buildings to form a curved ceiling called what

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true. b) some other scientific experts read the papers and provide quality control by eliminating many mistakes. c) an editor reads the papers, to make sure that all the semicolons are in the correct places. d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog. e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.

President jefferson called a "wall of separation between church and state."