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.

An economic term that describes happiness and its hard to measure in numbers is

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group. no, this does not need to be reported since it is unrelated to participation in the study. no, this does not need to be reported because two weeks have passed. no, this does not need to be reported since the subject recovered.

Arecent challenge to the european union created by a member state is?