Was Pope Gregory VII trying to purify the Church of corrupt bishops or trying to increase his power over kings?

Question

I know for sure that the answer is to increase power over kings.

But I don't exactly know WHY.

Answer 1

http://en.wikipedia.org/wiki/Pope_Gregory_VII

Read EVERYTHING in the first paragraph, especially from the second sentence onward. Check out the footnoted references. It's VERY clear.

Answer 2

Okay, sure thing
thank you so much :D