Body: "Protestantism" is northern Europe, Christianity, humanities and sciences, Church.
Louis Greenspan, Donald E. Miller, William Monter, Angie Heo are some authorities of "Protestantism".
People study "Protestantism" in order to The challenge for all Protestants is to reflect on their shared history within the church founded by Christ himself, who remains its head (Ephesians 4:15-16) and find new ways of relating to the rest of Christendom via ecumenical dialogue. Particularly in the last 30 years or so, the growth of the ecumenical movement has led to new ways by which Christians of all denominations can engage in dialogue and work together in proclaiming the gospel.John Wesley.
Some subfields in "Protestantism" include Anabaptists, Adventists, Anglicans, Baptists, Lutherans.