I think you forgot to give the options along with the question. i am answering the question based on my research and knowledge. The European nations were not satisfied with establishing free trade with Africa and Asia during the era of imperialism because <span>European nations wanted monopoly control of markets and resources.</span>
Answer:
A. it allowed brands to advertise and expand their markets.
Explanation:
The major impact of radio on the economy was that it brought advertising into American homes. ... It provided a source of entertainment which reached millions of American homes within three years. Although radio programs were entertaining, they had to be paid for; and this brought about the commercial.