"Many of the British North American colonies that eventually formed the United States of America were settled in the seventeenth century by men and women, who, in the face of European persecution, refused to compromise passionately held religious convictions and fled Europe. The New England colonies, New Jersey, Pennsylvania, and Maryland were conceived and established "as plantations of religion." Some settlers who arrived in these areas came for secular motives--"to catch fish" as one New Englander put it--but the great majority left Europe to worship God in the way they believed to be correct. They enthusiastically supported the efforts of their leaders to create "a city on a hill" or a "holy experiment," whose success would prove that God's plan for his churches could be successfully realized in the American wilderness. Even colonies like Virginia, which were planned as commercial ventures, were led by entrepreneurs who considered themselves "militant Protestants" and who worked diligently to promote the prosperity of the church."
(from Religion and the Founding of the American Republic