This right here goes to the exact questions the OP was asking. You believe that the Catholic church has told you the only history of all the churches but as I said using IFBs as a single example but certainly not the only example, other churches don't accept or believe the Catholic version of church history. You responded in the exact way that creates the divisions found among Christians.
I am not IFB, I was just using them as an example to show that what you said is one of the ways we ended up with many denominations so I really don't have a cause to try to prove anything but since I know you won't let this go I will provide you with two references and you can research it for yourself or not as you see fit.
The Story of the Baptists in all Ages and Countries - Rev. Richard B. Cook D.D.
https://books.google.com/books?id=_Y...page&q&f=false
The Trail of Blood by J.M. Carroll
http://www.jesus-is-savior.com/Books...jm_carroll.htm
BTW if it all started with Luther then would you please explain the Greek Orthodox(Eastern Orthodox) split that happened almost 500 years before Luther? Again this is just one example of a pre-Luther denomination, I can show you many others.