The nation’s air industry experienced rapid growth soon after the

a .start of the world war i.
b. introduction of passenger jets.
c. wright brothers flew the first plane.
d. opening of hartsfield-jackson international airport.

A

Explanation:

The answer to your question is A: the start of World War I. Once WWI started, the air industry's rapid growth began very soon.

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answer; the parasympathetic nervous system;