And the majority in the old south supported slavery.

Not quite.

"Large slaveholders were extremely rare. In 1860 only 11,000 Southerners (three-quarters of one percent of the white population) owned more than 50 slaves; a mere 2358 owned as many as 100 slaves. However, although large slaveholders were few in number, they owned most of the South’s slaves. Over half of all slaves lived on plantations with 20 or more slaves and a quarter lived on plantations with more than 50 slaves."

What the South supported was the ideal that States were sovereign, not the Federal government. And the South was correct.

__________________
"Victory at all costs, victory in spite of all terror, victory however long and hard the road may be; for without victory, there is no survival."
Winston Churchill