Which factor was responsible for the change in
population from 1860 to 1910?

Hello, I Am BrotherEye

American urban population growth from 1860 to 1910 resulted mainly from a large influx of immigrants.

Explanation:

The immigration from 1901 to 1910 had a greater effect on the USA than the immigration from 2001 to 2010.

This statement is true because the USA's foreign-born population is 50 million or 14 % of the total US population of 312 million according to the 2011 American Community Survey.

By 1910the immigrant share of the population peaked at 15 %. The foreign share of the population fell to 5% in 1970 and by 2010 it was around 6 %.

relations between the soviet union and the united states were driven by a complex interplay of ideological, political, and economic factors, which led to shifts between cautious cooperation and often bitter superpower rivalry over the years. the distinct differences in the political systems of the two countries often prevented them from reaching a mutual understanding on key policy issues and even, as in the case of the cuban missile crisis, brought them to the brink of war.

the united states government was initially hostile to the soviet leaders for taking russia out of world war i and was opposed to a state ideologically based on communism. although the united states embarked on a famine relief program in the soviet union in the early 1920s and american businessmen established commercial ties there during the period of the new economic policy (1921–29), the two countries did not establish diplomatic relations until 1933. by that time, the totalitarian nature of joseph stalin's regime presented an insurmountable obstacle to friendly relations with the west. although world war ii brought the two countries into alliance, based on the common aim of defeating nazi germany, the soviet union's aggressive, antidemocratic policy toward eastern europe had created tensions even before the war ended.

i really really really really really really dont know