Who immigrated to Chicago during the late 1800s and early 1900s?

The city was a magnet for European immigrants—at first Germans, Irish and Scandinavians, then from the 1890s to 1914, Jews, Czechs, Poles and Italians.

Explanation:

each played a major role in ending the cold war.

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.