Yet within sixty years after the Susan Constant entered the James River, seven colonies were firmly planted on the coast of North America: Virginia and Maryland to the south; Massachusetts Bay and Plymouth, Connecticut and Rhode Island, in New England; and between the two groups of English settlements was the Dutch colony of New Netherland on the Hudson. Within the limits of these colonies dwelt a population of more than seventy thousand people, economically self-sufficing, possessed of well-defined political institutions and clearly marked types of social and intellectual life. The English migration and the founding of the English colonies was in fact due mainly to the initiative of the colonists themselves; and the institutions which they established in America were different from those which statesmen and traders had imagined. The character of colonial life and institutions was determined by the motives which induced the settlers to leave the land of their birth, by the inherited traditions which they carried with them into the wilderness, and by the wilderness itself--the circumstances which, in the new country, closed them round. The motives which induced many Englishmen to come to America in the seventeenth century must be sought in the profound social changes occurring in the time of Elizabeth and the first Stuarts. The high hopes with which the Virginia Company looked forward to successful colonization were partly inspired by the prevailing belief that England was overpopulated. There was much to justify the belief. The reign of Elizabeth witnessed a striking increase in the number of unemployed, the poverty-stricken, and the vagabond. The destruction of the monasteries left the poor and defenseless without their accustomed sources of relief; while steadily rising prices, due partly to the increased supply of silver from the Spanish-American mines, were not infrequently disastrous to those who were already living close to the margin of subsistence. As never before country roads and the streets of towns were encumbered with the vagrant poor, and the jails and almshouses were filling up, as a result of Elizabethan legislation, with petty thieves, "rogues and sturdy beggars."