During the Reconstruction, which group wanted to punish the Confederate states for seceding from the Union and wanted to make it difficult for the states re-enter the Union?

The correct answer is radical republicans. They didn't want to let the countries join back as easily as they did and wanted to punish them even harsher for their secession. They also believed that the equality laws should be implemented on an even stricter basis where it would be completely ensured that the freedmen had voting rights and that they were not bothered regarding suffrage.

The answer on study island is Radical Republicans