In the late 1800s, the building of railroads in europe led to an increase in the u. s. immiration from which of the following areas?

lying without the limits of the several states; and may permit them, at such times, and in such manner as it

the answer is the government.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.