As the young republic took shape, schooling was promoted for both secular and moral reasons. By the time of the nineteenth century, however, religion became a problem in the schools. In the United States, the overwhelming dominant religion was Protestantism. While not as prominent as during the Puritan era, the King James Bible was, nevertheless, a staple of U.S. public schools. Yet, as waves of immigrants from Ireland, Germany, and Italy came to the country from the mid-nineteenth century forward, they reacted to the Protestant tone and orthodoxy of the schools. Concerned that their children would be weaned from their faith, Catholics developed their own school system. Later in the twentieth century, other religious groups, such as Jews, Muslims, and even various Protestant denominations, formed their own schools. Each group desired, and continues to desire, that its moral education be rooted in its respective faith or code.