In the United States, the first day nursery was opened in 1854. Nurseries were established in various areas during the ___61__ half of the 19th century; most of ___62___ were charitable. Both in Europe and in the U.S. the day-nursery movement received great ___63___ during the First World War, when ___64___ of manpower caused the industrial employment of unprecedented（前所未有）numbers of women. In some European countries nurseries were establishes ___65___ in munitions（军火）plants, under direct government sponsorship. ___66___ the number of nurseries in the U.S. also rose ___67___, this rise was accomplished without government aid of any kind. During the years following the First World War, ___68___, Federal, State, and local governments gradually began to exercise a measure of control ___69___ the day nurseries, chiefly by ___70___ them and by inspecting and regulating the conditions within the nurseries.
    The ___71___ of the Second World War was quickly followed by an increase in the number of day nurseries in almost all countries, as women were ___72___ called upon to replace men in the factories. On this ___73___ the U.S. government immediately came to the support of the nursery schools. ___74___ $6,000,000 in July, 1942, for a nursery-school program for the children of working mothers. Many States and local communities ___75___ this Federal aid. By the end of the war, in August, 1945, more than 100,000 children were being cared ___76___ in day-care centers receiving Federal ___77___. Soon afterward, the Federal government ___78___ cut down its expenditures for this purpose and later ___79___ them, causing a sharp drop in the number of nursery schools in operation. However, the expectation that most employed mothers would leave their ___80___ at the end of the war was only partly fulfilled.