Which of the following describes slavery's role in the southern economy a. slavery was expensive b. slavery was forbidden c. slavery was luxury d. slavery was profitable you get 20 pts hurry

The united states constitution gives the the power to regulate interstate commerce.

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups. b. a researcher conducts a linguistic study of comments posted on a local public blog. c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression. d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.

What city was divided between communism and democracy/capitalism after world war 2