Which statements about cultural changes in the 1920s are true? choose all answers that are correct.
a. americans abandoned materialism to return to a simpler life.
b. radio became a popular form of entertainment.
c. women bobbed their hair and wore make-up
d. the charleston became a popular dance craze

Profits are maximized when marginal revenue and marginal costs are a. set c. equal b. less than market price d. greater than market price

How did the invention of the cotton gin affect slave labor in the united states? a. there was a forced migration of slaves from the south to the north. b. slave-owning cotton planters were gradually forced to sell their plantations. c. more slaves were purchased to work on cotton plantations in the south. d. the reduced need for labor on cotton plantations led to a decline in slavery. e. slaves were moved from cotton plantations to sugar plantations.

Members of the common school movement believed that