What actions of Henry IV prompted Gregory VII to excommunicate him?

Question

during the Crusades. please answer in a short answer thank you

Answer 1

The Investiture Controversy or Investiture Contest was an 11th century dispute between Henry IV, Holy Roman Emperor and Pope Gregory VII over who would control appointments of church officials (investiture). It was the most significant conflict between secular and religious powers in medieval Europe. By undercutting the Imperial power established by the Salian emperors, the controversy lead to nearly 50 years of civil war in Germany, the triumph of the great dukes and abbots, and the disintegration of the Holy Roman Empire from which Germany would not recover until the unification of Germany in the 19th century.

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Answer 2

i believe it happened a fair bit actually i think that he held another monarch hostage and that the pope had ordered the release and yet he refused  so he was excommunicated

Answer 3

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