Condolence is the word that satisfies the given rule.
Explanation:
The given rule says that identify a word which ends with '-e', then remove 'e' and add the suffix 'ence' to the word, unless final 'e' is needed so that preceding consonant's sound is preserved.
'Condole' is the word that ends with 'e' and 'e' is silent here. If we drop 'e' and add suffix 'ence', it becomes condolence. Thus, this word satisfies the given rule.
There are other words also like vengeance, occurrence that end with '-ence' but they do not satisfy the given spelling rule.
They were also against allowing new states to join the United States as slave states. Some people were opposed to slavery for moral reasons, and they formed a movement formed in the North called abolitionism. The movement called for the legal end to slavery in all of the United States.