Question

radial divisions
...
how did southern states respond to the passage of the 15th amendment?
they announced that they were rejecting the 15th amendment.
they held events encouraging blacks to vote and helping them register.
they passed laws that blocked blacks from voting without violating taxes.

Explanation:

The 15th Amendment granted African American men the right to vote. Southern states, seeking to maintain white supremacy, implemented measures like literacy tests, poll taxes, and grandfather clauses (which disproportionately affected Black voters as many were descendants of slaves and couldn't meet the criteria) to block Black voters without explicitly violating the amendment. The first option is incorrect as they didn't openly reject it in that way, and the second option is opposite to their actions.

Answer:

They passed laws that blocked Blacks from voting without violating laws.