From 1947 to 1973, there are some other factors besides unions involved, not the least of which is the lack of any serious manufacturing competition throughout the entire world. Additionally, U.S. manufacturing capabilities were on steroids following World War II while other traditional manufacturing competitors were either devastated or in great disarray. Effectively, the world was clamoring for U.S. products and services while they were rebuilding their domestic production capabilities. These conditions gave the nation a tremendous base of both blue-collar and white-collar employment that resulted in the world's largest and most affluent middle class. Throughout this period, there never was a majority of unionized labor, yet somehow in spite of that, the world's largest middle class grew.