People wanted to turn to the Bible for answers. But there was no Bible in the common language of the people . With the invention of the printing press in the 1400's, more Bibles were printed in French for the people to read for themselves. This led to a personal faith.
On the political side, the individual kings and princes wanted more control over their territories. Grégoire VII proclaimed the universal authority of the Pope in 1075. The Pope could make decisions, raise taxes and gather an army from the entire Catholic world. The individual leaders wanted more independence.
Everyone was a ready for a change. The religious people, the poor and the powerful began to protest.