Why were many of the machines that sped up production and travel invented during the 18th and 19th centuries?
a. rulers were finally funding scientific research.
b. there was finally a need for scientific discoveries.
c. actually, most of them were produced during the 17th century.
d. there was a heightened interest in science during this time.

answer: which of the following best describes greek tragedy?

a) it was lighthearted and included songs and elaborate costumes.

b) the plays included political statement that mocked leaders and their policies.

c) the lead character suffers because of personal flaw.

d) the gods intervene negatively in the lives of men.

the answer would be d

explanation: