what is the name of the movement that hoped to change the Christian Church for the better but ended up dividing Christianity?

Restoration Movement or Stone-Campbell Movement is one such movement that hoped to change Christian Church for the better but ended up dividing Christianity furthermore. The Movement was started in early 19th century in America, with the purpose to unite Christianity under one roof that was patterned after the Church of New Testament. The movement later began to differentiate with various established principles of Christianity and became a denomination of Christianity in itself. Today, we see Restorationism is one the largest denominations of Christianity having more than 35 million followers.