In roman times most people lived in small cities, while during the middle ages most people lived in the countryside. all of the following are reasons for this change except
a. people fled the urban centers because they had become too crowded and unsanitary
b. the city no longer was a center of government
c. the cities came under attack from outside invaders
d. the trade-based economy of the city declined

What is the purpose of a firm? the answer is to produce goods and services

List five people who saw the risen lord jesus. a. b. c. d. e.

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.