Progressive Era (1 янв 1880 г. – 1 янв 1920 г.)
Описание:
widespread social reform and increased social activism solving some problems arising during Gilded Age. Also, major CA cities explode in population.Добавлено на ленту времени:
Дата:
1 янв 1880 г.
1 янв 1920 г.
~ 40 years
