Society and government in England in the early 14th century were challenged by the Great Famine and the Black Death. The economic and demographic crisis created a sudden surplus of land, undermining the ability of landowners to exert their feudal rights and causing a collapse in incomes from rented lands. Wages soared, as employers competed for a scarce workforce. Legislation was introduced to limit wages and to prevent the consumption of luxury goods by the lower classes, with prosecutions coming to take up most of the legal system's energy and time. A poll tax was introduced in 1377 that spread the costs of the war in France more widely across the whole population. The tensions spilled over into violence in the summer of 1381 in the form of the Peasants' Revolt; a violent retribution followed, with as many as 7,000 alleged rebels executed. A new class of gentry emerged as a result of these changes, renting land from the major nobility to farm out at a profit. The legal system continued to expand during the 14th century, dealing with an ever-wider set of complex problems.