In Canada and the United States, the oldest and second largest body is the Reformed Church in America, which was the American branch of the Dutch Reformed Church in the Netherlands between 1628 and 1819. The largest Dutch Reformed body in North America, the Christian Reformed Church in North America, split off from Reformed Church in America in 1857. Smaller related denominations and federations include the Canadian and American Reformed Churches, the Free Reformed Churches of North America (FRC), the Heritage Reformed Congregations (HRC), the Netherlands Reformed Congregations (NRC), the Protestant Reformed Churches in America (PRC), and the United Reformed Churches in North America (URC). The Dutch were mainly Protestant and Catholic before arrival to America, but became dominantly Protestant after settling in America. They spread their religion by forming bonds with the natives in The Ohio River Valley.