How did aqueducts and sewer systems help expand the Roman Empire?

by enabling the Romans to rely on solar power
by providing technology from Germany
by providing fresh water and proper sanitation
by enabling the Romans to purify salt water

Which list states events of the mongol empire in the correct chronological order

Which examines the impact of napoleon’s territorial conquest on the world?

What is the difference between direct learning and indirect learning? a. direct learning is independent learning that people pursue on their own. indirect learning is forced on the learner by others, such as parents or teachers. b. direct learning is forced on learners so that they'll become productive members of society. indirect learning is a voluntary action taken by the learner with the intention of becoming a productive member of society. c. when people learn culture directly, they are imitating and observing others. when people learn culture indirectly, they are being taught by someone else. d. when people learn culture directly, they are being taught by someone else. when people learn culture indirectly, they are learning through observation and imitation.