Progressives sought to solve the problems that had been created by rapid immigration, and urbanization.
1. unionization
2. segregation
3. industrialization

Option 3. Progressives sought to solve the problems that had been created by rapid industrialization, immigration, and urbanization.

Explanation:

The period in United States' history that goes from 1890 until 1920 is known as the Progressive Era. As the name indicates, this era is characterized by a social and political reform made in an effort to make a better society with better standards of living for its citizens.

The Era was an answer to all of the negative impacts the rapid industrialization, huge waves of immigrants arriving all together at the country, and urbanization had on a society that was not completely ready to handle all of this drastic changes.

it the big letter b heart my answer

the answer is b for brother