The last one hundred years has not looked kindly on Christendom. World War I had the outcome of destroying the Christian monarchies of Europe. Out of this war Communism took a giant leap, not for but against mankind. Millions of Christians, in Russia and Europe as a whole, died in its midst and in its wake.
But as G. K. Chesterton wrote in 1925 in The Everlasting Man, between the first and second world wars;
“Christendom has had a series of revolutions and in each one of them Christianity has died. Christianity has died many times and risen again; for it had a God who knew the way out of the grave.”