Because when people go into debt they can't pay for thing and that messes up the business cycle because people file for bankruotys and the unemmoymet rate goes up and people buy less stuff and businesses go out of buisness.
#3 is most likely the answer.
Hope this Helped!
;D
Brainliest??
Answer:
C)
Explanation:
Lewis Nixon invented the very first Sonar type listening device in 1906 as a way of detecting icebergs. Interest in Sonar increased during World War I when there was a need to be able to detect submarines.
A: They lived in regions where climate was markedly different
