How did the Supreme Court decision in Dred Scott v. Sandford increase sectionalism?
A. It gave full citizenship to African Americans
B. It allowed Congress to prohibit slavery west of the Mississippi River
C. It denied Congress the power to regulate slavery in the territories
D. It left questions regarding slavery up to the executive branch

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.

About how many crusaders took part in the crusaders

What if the united states, mexico, and canada took the eu’s example and joined to forms north american union ? based on your knowledge of the europe union, describe two setbacks or hurdles that this idea might face