Which action was not used by some white southerners to deny justice to blacks?

a. they passed black codes.
b. they allowed hate groups such as the ku klux klan to terrorize blacks.
c. they refused to establish schools for blacks.
d. they allowed blacks to vote and hold political office.

this question really stumped me..

Which caused demand for farm products to decline after world war i

How do developments in the us space program during the ford administration reflect the foreign policy of president ford

The american public did not truly take in the horror of adolf hitler's regime until years after the existence of concentration camps was first reported in american newspapers. partly this was the fault of the media, which did not give prominent placement to news of the holocaust. what other factors do you think contributed to the long delay in understanding the holocaust?