The appearance in many U.S. cities of department stores, organized sporting events, musical theaters and?

Question

amusement parks in the last decades of the 19th century was evidence of what effect of industrialization? A.improved living conditions on american farms B.the growing power of unions to negotiate benefits for their members C.government-sponsored programs to improve public health and education D.an increase in the leisure time and disposable income of the urban middle class

Answer 1

A, definitely A.