On what matter did Henry IV and Gregory VII disagree?

Should the united states have continued to fight in the vietnam war after 1968?

Which of the following methods did the media use to project a winner in the 2000 presidential election before all the votes had been counted? a. hacking into computers to see the totals before they were made public b. exit polls and surveys c. scientific calculations based on cultural trends d. they picked who they wanted to win the election

During the middle kingdom period of ancient egypt a.) women could not own a business or property b.) the merchant class declined due to lack of trade c.) the pharaoh lost power and a new middle class began to emerge d.) slaves produced most goods for the economy