Genesis 10 tells us what a nation is: descendants from a common ancestor.

Genesis 11 tells us what an Empire is: the mixing of nations.
God hated Babel.

God ordained the unique racial nations.
God hated Babel and scattered the nations to their own places.

Why won’t preachers preach this? (Because they want to be friends with the world).
Liberty is never in an empire; it can only be pursued by separate nations under God.