In 1122 the treaty called the concordat of worms gave the church the sole power to a. excommunicate the holy roman emperor. b. invest bishops with fiefs. c. prevent bishops from accepting jobs from monarchs. d. elect and inverse bishops with spiritual authority

The treaty gave the power for the church to elect and invest bishops with spiritual authority.
 the Concordat of Worms marked the first formal integration between the church and the government. This treaty eventually led to the power struggle that happened between members of the churches and the nobles.

What research did you learn from?