But in 1990, religious non-affiliation in the U.S. took a sudden turn, which has re-shaped American politics, marriage, and identity.
I wrote about what happened.
theatlantic.com/ideas/archive/…
1) The rise of the Christian Right in the 1970s and 80s, which accelerated Evangelical sorting into the GOP but turned off young liberals.
2) The end of the Cold War, which severed the association btw godlessness and "Evil Empire"