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.

500 books can be produced by one man and a printing press within 5 months, while a copyist can only produce one in the same amount of time

here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)