Why was the mita system important to the incan empire

a. it incan astronomers calculate the movements of the stars

b. it allowed the government to collect taxes in the form of physical labor

c. it the emperor keep strict control over faraway lands

d. it kept order by forming a strict social hierarchy

Describe some effects of the rise of communism in the soviet union?

Which of the following is the best explanation of the difference between prejudice and discrimination?

Francine, a college freshman, has agreed to participate in a psychology research study. before she begins her participation, she reads a statement written by the researcher explaining the purpose of the research and the potential risks of participation. it also explains that francine is free to withdraw from the research at any time. in providing francine with this statement, the researcher has followed the ethical guidelines of for participants.