For how long has flight simulation been used to train pilots and engineers design planes?

since the 1920s and 1930s

Explanation: The best-known earliest known flight simulation device was the Link Trainer, produced by Edwin Link in Binghamton, New York, USA, he started building it in 1927. He then later patented his design, which was first available for sale in 1929

the results of roman expansion produced social conflict and civil war. julius caesar gained power and became a dictator but was then assassinated. the reign of augustus began a long period of imperial rule and peace in the roman empire. rome faced the problems of how to maintain peace, law, and order.

hope this !

brainliest?

i would say your answer is a)

sorry if im wrong