(1.) In a very backward state of society, like that of Europe in the middle ages, and many parts of Asia at present, population is kept down by actual starvation. The starvation does not take place in ordinary years, but in seasons of scarcity, which in those states of society are much more frequent and more extreme than Europe is now accustomed to. (2.) In a more improved state, few, even among the poorest of the people, are limited to actual necessaries, and to a bare sufficiency of those: and the increase is kept within bounds, not by excess of deaths, but by limitation of births.(124) The limitation is brought about in various ways. In some countries, it is the result of prudent or conscientious self-restraint. There is a condition to which the laboring-people are habituated; they perceive that, by having too numerous families, they must sink below that condition, or fail to transmit it to their children; and this they do not choose to submit to. There are other cases in which the prudence and forethought, which perhaps might not be exercised by the people themselves, are exercised by the state for their benefit; marriage not being permitted until the contracting parties can show that they have the prospect of a comfortable support. There are places, again, in which the restraining cause seems to be not so much individual prudence, as some general and perhaps even accidental habit of the country. In the rural districts of England, during the last century, the growth of population was very effectually repressed by the difficulty of obtaining a cottage to live in. It was the custom for unmarried laborers to lodge and board with their employers; it was the custom for married laborers to have a cottage: and the rule of the English poor-laws, by which a parish was charged with the support of its unemployed poor, rendered land-owners averse to promote marriage. About the end of the century, the great demand for men in war and manufactures made it be thought a patriotic thing to encourage population: and about the same time the growing inclination of farmers to live like rich people, favored as it was by a long period of high prices, made them desirous of keeping inferiors at a greater distance, and, pecuniary motives arising from abuses of the poor-laws being superadded, they gradually drove their laborers into cottages, which the landowners now no longer refused permission to build.