Question

the time period between 1880-1920 was a really big deal (or significant in american history) for all of the following reasons except... the population of people living in cities increased by 48% america became the largest industrial power in the world america became the largest military power in the world

Explanation:

1. 1880-1920 was the Gilded Age/Progressive Era: urbanization boomed with a massive rise in city populations, and the U.S. surpassed other nations to become the world's top industrial power.
2. However, the U.S. did not become the largest military power globally until after World War II, not during 1880-1920.

Answer:

America became the largest military power in the world