Civil rights movement! Name of the movement?

Which research model refers to the study of an individual, group, or community over a predetermined period? a. cross-sectional model b. sectional model c. cross-sequential model d. longitudinal model

Which statement best explains how world war ii to end the great depression? a. new job opportunities opened as the united states produced more military products. b. the u.s. army provided new jobs that paid better than any other work at the time. c. people had to worry more about war problems than about the economic crisis. d. the war caused people to trust the economy enough to spend more money.

In exchange for land, a knight agrees to be a sort of sub-vassal to a vassal. this agreement was known as: investiture homage tyranny subinfeudation