Liberalism exploited Christianity's faltering/loss of power after the Enlightenment. Opportunistic Liberals took the opportunity to produce mountains of propaganda and start sowing the seeds of Liberalism, and put it into full effect in the American and French Revolutions, which gave way to communism and the mass liberal globalism of today.

It wasn't Christianity that created Liberalism, it was opportunistic people (mainly Jews and their shabbos goyim) who exploited Christian ideas and Christianity's righteous teachings to turn them into a bastardized, disgusting tool to destroy the world with.