What was the purpose of secret groups as the ku klux klan and the white camelia? to pass new laws giving civil rights to blacks to register black voters during reconstruction to restrict and frighten blacks from being involved in southern governments to overthrow republican radicals

to restrict and frighten blacks from being involved in Southern governments

Explanation:

The Ku Klux Klan and White Camelia, were both groups that were operating in closed circles and in secrecy. They were racist groups, and their main purpose was to keep the black population repressed, segregated, and to not allow it to start occupying important positions in the society and government. This was mostly focused on the Southern states, as those were the states that were the most against the abolishing of slavery, so these two groups had the most support and seeing through fingers by the authorities in here.

a, c, & d are correct:

they wanted lands to settle the extra population.

they wanted new markets for english goods.

they wanted to avoid civil war.

it provided for equal trade rights among nations in china.