Which statement best explains why the United States grew into a world economic power in the 20th century?
A. The United States stayed out of major world wars and instead
made economic investments.
B. The United States put effective trade barriers in place to limit trade
with other nations.
C. The United States benefited from investments in manufacturing
and technology
D. The United States prevented other countries from abandoning the
gold standard.

Aresearcher conducting behavioral research collects individually identifiable sensitive information about illicit drug use and other illegal behaviors by surveying college students. one of the subjects is in an automobile accident two weeks after participating in the research study. is this an example of an unanticipated problem that requires reporting to the irb? yes, this must be reported because it was not listed as a risk of study participation in the consent form (was unexpected) and the subject experienced harm.yes, this must be reported because it involved a subject in a research study and it’s up to the irb to determine if it was related to participation.no, this does not need to be reported because it was assessed by the researcher as unrelated to the research study.no, this does not need to be reported to the irb since the researcher reported it to the sponsor of the study.

What is grievance 28 on the declaration of independence explained in simpler words? plz

In what way was family life impacted by industrialization? a. there was a rise in the middle class. b. there was a decrease in the birth rate. c. women were not allowed to work in factories. d. families relied on farming for food supplies.