Final answer:
Progressivism during high immigration and a polyglot population emphasized individualism, supported cultural diversity, and did not promote isolationism.
Step-by-step explanation:
The unique characteristics of Progressivism as they coped with high immigration and a polyglot population are as follows:
- Emphasis on individualism: Progressivism placed importance on the individual, valuing their goals, desires, and independence.
- Support for cultural diversity: Progressives recognized and celebrated cultural diversity, embracing the different languages, customs, and religions of immigrants.
- Promotion of isolationism: Progressivism did not advocate for strict immigration laws or isolationism. Instead, they focused on social reforms and promoting efficiency and social justice.