By 1860, how many people immigrated to the west?

5 million immigrants

Explanation:

Between 1820 and 1860, roughly 5 million immigrants arrived in the U.S.—more than the country's 1790 total population of just less than 4 million.

roughly 5 million immigrants arrived in the U.S. in 1860. hope i helped :)

b. the 200th birthday of the united states

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d