The battles of lexington and concord signaled a) the emergence of the united states as a major world power. b) the final french defeat in north america, which drove them from the continent. c) the beginning of the revolutionary war in the north american british colonies. d) the final defeat of the british, in which cornwallis had to surrender to washington.

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.