3. T/F Pope Leo III strengthened the role of the Church and the clergy in Europe when he crowned Charlemagne emperor of the Romans.​

True

Explanation:

In crowning Charlemagne as Holy Roman Emperor, the Church gained more prestige because it was now seen as the sole body that was capable of granting such authority to a kingdom.

It also gave the Church the backing of the Holy Roman Empire which was a strong empire. Having access to such a strong empire would prove to be very beneficial as the Church enforced its policies.

c. taught scientists many new things about the earth, but not other planets.

explanation:

answer; a team- maintenance role;