What did pope gregory vii do to change the balance of power in the medieval period?

Pope Gregory VII changed balance of power in the medieval period that he declared dictatus Pape to balance the growing. One of the colossal changing popes, he is maybe best known for the part he played in the Investiture Controversy, his question with Henry IV, Holy Roman Emperor that certified the supremacy of ecclesiastical specialist and the new standard law representing the decision of the pope by the College of Cardinals.

A.) A person born in the U.S. whose parents are citizens of another country.

Explanation:

B/c in b.) that's not right. In c.) that's not right. And in d.) I believe that it has to be at least 15 years