Answer:
C. The increased importance of industrialization.
Explanation:
The rapid development of cities was due to the growth of industrialization. Industrialization was increasingly demanding labor, so people moved from the countryside to the city in search of better living conditions and income. Particularly in the US, nineteenth-century industrial development ,and consequent urbanization ,were very much driven by the development of railways, which gave industry conditions to lower production and transportation costs in order to develop more rapidly.
Radio, Television, Telephone, and jazz music are some of the things that profoundly transformed entertainment, education, commerce, and research in the 1920s
C.) factories and industries because they have lots of factories that pollute the air by releasing smoke and other chemicals into the air.
<span>A. French began to settle colonies in the early 1600's B. Samuel de Champlain made 11 voyages to explore lands along the St. Lawrence River. He established settlement on the banks of the river named Quebec</span>