I believe the answer is: c. airplanes, farming
During the wartime, airplanes industries managed to develop the technology that allow the planes to move at higher elevation and speed, which would give a competitive advantage during the war.
The development in farming revolve around their preservation technique, which made is easier for the government to prepare the meal supply for their soldiers.
Answer:
Moctezuma received him with a great ceremony, but undoubtedly with treacherous intent.
Explanation:
Moctezuma was an Aztec emperor. I do not know which emperor you are referring to (the first or second) so I just structured a sentence using what knowledge I know of both of them.
Hope it helped
Answer:
the dominant social system in medieval Europe, in which the nobility held lands from the Crown in exchange for military service, and vassals were in turn tenants of the nobles, while the peasants (villeins or serfs) were obliged to live on their lord's land and give him homage, labor, and a share of the produce, notionally in exchange for military protection.
Explanation:
i have had this on edgenui ty before. it should be muliple choice, if it is not the answer up there might be able to help you. but if it is multiple choice tell me in the comments below.
Environmental Protection Agency (EPA) establishes in 1970 to help us have a cleaner and healthier environment