And- the “conservative” party (that wanted to retain or “conserve” the old ways, states rights, slavery, etc) was the Democrats in the south. The “progressive” party (that wanted to abolish slavery and was for slaves rights) was the Republicans in the north. At the same time “conservative” democrats were starting the KKK as well.
The party ideologies have changed (swapped is more appropriate) since then but “conservatives” still fly the confederate flag and “progressives” are trying to get rid of them.