in many places exacerbated the problem. Moreover, while some diseases, such as cholera, were being driven out, others, such as sexually transmitted diseases, made themselves felt. Moral standards Victorian morality was a surprising new reality. The changes in moral standards and actual behaviour across the British were profound. Historian Harold Perkin wrote: Between 1780 and 1850 the English ceased to be one of the most aggressive, brutal, rowdy, outspoken, riotous, cruel and bloodthirsty nations in the world and became one of the most inhibited, polite, orderly, tender-minded, prudish and hypocritical. Historians continue to debate the various causes of this dramatic change. Asa Briggs emphasizes the strong reaction against the French Revolution, and the need to focus British efforts on its defeat and not be diverged by pleasurable sins. Briggs also stresses the powerful role of the evangelical movement among the Nonconformists, as well as the evangelical faction inside the established Church of England. The religious and political reformers set up organizations that monitored behaviour, and pushed for government action. Among the higher social classes, there was a marked decline in gambling, horse races, and obscene theatres; there was much less heavy gambling or patronage of upscale houses of prostitution. The highly visible debauchery characteristic of aristocratic England in the early 19th century simply disappeared. Historians agree that the middle classes not only professed high personal moral standards, but actually followed them. There is a debate whether the working classes followed suit. Moralists in the late 19th century such as Henry Mayhew decried the slums for their supposed high levels of cohabitation without marriage and illegitimate births. However new research using computerized matching of data files shows that the rates of cohabitation were quite low—under 5%—for the working class and the poor. By contrast, in 21st-century Britain nearly half of all children are born outside marriage, and nine in ten newlyweds have been cohabitating. Crime, police and prisons Crime was getting exponentially worse. There were 4,065 arrests for criminal offenses in 1805, tripling to 14,437 in 1835 and doubling to 31,309 in 1842 in England and Wales. 18th-century British criminology had emphasized severe punishment. Slowly capital punishment was replaced by transportation, first to the American colonies and then to Australia, and, especially, by long-term incarceration in newly built prisons. As one historian points out, "Public and violent punishment which attacked the body by branding, whipping, and hanging was giving way to