Why were many immigrants drawn to serving in the northern army?
they wanted to fight against the confederacy and slavery.
they could make a lot more money in the army lifestyle.
it was the only way for them to gain citizenship.
army life gave them a job with a steady source of income.

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.

the french revolution was when many people were persecuted for disagreeing or making separate government