How did the Northwest Ordinance affect the treatment of Native Americans

According to this map, which of these statements is most correct? a) fewer people are contracting hiv in europe than in the past. b) fewer people are contracting hiv in southern africa than in the past. c) egyptians are less likely to contract hiv than people in sub-saharan africa. d) people in canada contract hiv more frequently than people in the united states.

Which of the following is an advantage of using nuclear power plants to produce electricity?

What does one prolonged blast and one short blast mean?