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
black codes allowed black people the right to vote without paying a poll tax.
a. true
b. false

Ku Klux Klan was a known racist organization that wanted to frighten the black population - the correct answer is"to restrict and frighten blacks from being involved in Southern governments"

The Black Codes were codes that restricted the rights of African Americans to work - so it's false that it allowed black people the right to vote without paying a poll tax. (this was the 24th Amendment)

Use the formula: (n-2)×180, where n is the number of sides(18-2)×180= 28800, now this is the full exterior angle of 18-gon so you divide it by 18.28800÷18=160