The appearance in many U. S. cities of department stores, organized sporting events, musical theaters, and amusement parks in the last decades of the 19th century was evidence of what effect of industrialization? A.
The Urban (urban=city) Middle Class had more time and money for leisure time activities.
B.
More people moved to American farms.

C.
Labor union power to negotiate benefits for their members grew greatly.
D.
The government sponsored and paid for programs to improve public health and education.