The mainline (also sometimes called mainstream) or mainline Protestant denominations are those Protestant denominations that comprised the vast majority of American Protestantism in the 1700s, 1800s, and early 1900s. They were the dominant U. S. Protestant denominations. Most are rooted in the U. S. North, and most have maintained moderate theologies that stress both social justice concerns on the one hand, and personal salvation and evangelism on the other hand.