Who launch the protestant reformation in the 1500s

Hello.

The answer is: Martin Luther

One of these was the German professor-priest Martin Luther who in 1517 issued a challenge the church over this new interest in worldly affairs. He wanted the church to return to the pure (spiritual) ways of the early church--and back away from all this recent interest in power and wealth--which was rapidly corrupting it.  Also, he wanted faith initiatives to be returned to the individual believer.  Luther translated the Bible into German--to give the common people access to all priestly authority: the Word of God.

Have a nice day

lots of people lost money in both