Starting in 1936 with the publication of his "General Theory", the Keynesian revolution in economic thinking had by the end of the 1940s elevated John Maynard Keynes's ideas to an ascendant position in mainstream economics. The new post-WWII international monetary and trading system, reflected by Embedded liberalism, was partly a creation of Lord Keynes, and not just theoretically. Keynes had personally negotiated many of the practical details at the 1944 Bretton Woods Conference. During the Golden Age of Capitalism of the 1950s and 1960s, governments of the United States, Great Britain and many other countries adopted Keynesian principles; moderate intervention by governments in their domestic economies was believed by Keynesians to deliver higher levels of employment and prosperity than would be possible from the unaided free market.