Author and psychologist Dr. Kevin MacDonald has explained that research shows that the original egalitarian hunter-gatherer culture of Northern Europeans was later dominated by the warrior culture of conquering Indo-Europeans. Neither were strongly ethnocentric, making Europeans the only major human group predisposed to individualism and universalism. The Indo-European warrior culture subsided over time as the egalitarianism of Northern Europe strongly re-emerged (as can be seen in the rise of the Puritan cult and the anti-slavery liberalism of England, Western Europe and the Northern USA). MacDonald identifies the Confederacy as the last hurrah of the Indo-European warrior culture, with its defeat by Northern European egalitarianism.
Dr. MacDonald has not yet read my book Our Southern Nation: Its Origin and Future but in it I argue that the plantation system (which we got from the Iberians who got it from the Italians and Crusader States) made Southerners resistant to the rising tide of individualism and liberalism. It connected us to the positive values of the Classical Civilizations. It imparted a healthy ethnocentrism. It was inegalitarian. And it presented a way in which our people and high civilization might have avoided the pitfalls of individualism and egalitarianism.