Counting both black and whites, it had a population of over 20 million people in 1861 (larger than the other side) 1) north
2) both
3) neither
4) south

The third one would be the answer

Jackson  said nullification 'means insurrection and war,' and called it a treasonous attack on america. the second aspect of the  force bill  was the passing in congress of a lower tariff in 1833. this was offered as a compromise to avoid conflict with south carolina, and to attempt to defuse the tense situation.source google