Educação Superior::Ciências Biológicas::Biologia GeralEducação Superior::Ciências Humanas::GeografiaPresents a class of Professor Robert Wyman that discuss about the demographic transition, fertility in northwestern Europe was controlled by limiting marriage. Marriage was regulated by landowners and the churches, and was not allowed unless a man had accumulated the resources necessary to support a family. Long periods of being landless, a servant, or an apprentice, precluded marriage. Once married, there was no control of fertility. But, only about half of adults were married at any given time, so fertility was about half of what it might have been. Eventually, contraception was accepted and fertility within marriage fell. Society no longer needed to control marriage so tightly and marriage rates rose dramatically