Using complete sentences, describe what present-day Canada and the United States looked like just prior to contact between Europeans and Native Americans.

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.

Using the president's schedule, identify one example of the president using constitutional powers and fulfilling his duties. then, explain how and why that power is limited. give your answer in the form of at least three complete sentences.

Most of the workers who laid the central pacific railroad were?