Christianity was introduced with the first European settlers beginning in the 16th and 17th centuries. Colonists from Northern Europe introduced Protestantism in its Anglican and Reformed forms to Massachusetts Bay Colony, New Netherland, Virginia colony, and Carolina Colony. The first arrivals were adherents to Anglicanism, Congregationalism, Presbyterianism, Lutheranism, Quakerism, Mennonite and the Moravian Church from British, German, Dutch, and Nordic stock. America emerged as a Protestant majority nation, with significant minorities of Roman Catholics and Jews.
Altogether, Protestants comprised the majority of the population until 2012 when the Protestant share of U.S. population dropped to 48%, thus ending its status as religion of the majority. The decline is attributed mainly to the dropping membership of the Mainline Protestant churches, while Evangelical Protestant and Black churches are stable or continue to grow. Today, 46.5% of the United States population is Mainline Protestant, Evangelical Protestant, or a Black church attendee.