How are the civilizations in Mesoamerica and South America similar to the Early river Valley civilizations?

What would happen if airlines and baseball stadiums priced all seats the same instead of using variable pricing

Which statement best explains how world war ii to end the great depression? a. new job opportunities opened as the united states produced more military products. b. the u.s. army provided new jobs that paid better than any other work at the time. c. people had to worry more about war problems than about the economic crisis. d. the war caused people to trust the economy enough to spend more money.

Which of the following is one of the innovations that neolithic farmers become more productive? a) plow b) windmill c) tractor d) reaper