Sunday

You can trace almost every Protestant sect today back to five branches:

1. Lutheran
2. Reform
3. Radical
4. Anglican
5. Pentecostal

The first three were in existence within a few years after 1517 and had already started splintering among themselves a few years after that.

Anglican in less than 20 years, and it started splintering within 20 years.

(The fifth, Pentecostal (Assemblies of God), would crop up much later, around 1900.)