In what period did audiences in the United States and Europe begin accepting that they would need to pay to see a musical performance?

On the North American continent, the most conspicuous remains from the Neolithic period are:

a. animal heads. b. cave paintings. c. giant earth mounds. d. all of these. e. none of these.

According to Sigmund Freud, what factors other than reason and logic influence human behavior?

A) ?the environment B) ?the subconscious C) ?the superego D) ?genetics