Rothbard has some very interesting things to say about this in his *excellent* _The Progressive Era_...free on mises.org
Oh I do like me some Rothbard and the Mises website sometimes has audio books. Perfect for another long day at work. Thanks
It's hard to pick a favorite, but that one is definitely near the top. Enjoy!
...and, as a believer, you'll especially appreciate certain sections on what he calls secular postmillennialism. It connected a lot of dots for me.