What were the main ideas of Martin Luther’s teachings? The reason for the peasant war in Germany?

The reason for the peasant war in Germany was the strengthening of the power of the masters over the rural population, changes for the worse in the peasant life. The peasants wanted to free themselves from the rule of the nobles, abolish serfdom and thereby free themselves from duties.

The main idea of Martin Luther’s teaching was that a person can be saved only with the help of faith in God within himself, the mediation of a priest is not required.