"Professor Joseph Dellapenna, the foremost historian of abortion law in the Western world, has argued that, by 1960, such changes shaped the demand for abortion before the cultural upheaval of the 1960s. These included the impact of the Industrial Revolution on family life and work patterns, the entrance of more women into the workforce, greater sexual experimentation, and the desire to limit pregnanct, along with technology that made abortion-in terms of immediate risks-more effective and safer for the woman."