Answer:
This was because during the Roman Republic, the value of art and religion was not took into mind so very carefully. But when the Roman Empire started, the Renaissance made people think twice about the art they had and the religion they believed in. Since then, the world has considered art and religion "important."
The correct answer is:
D. It had to be rebuilt from almost nothing.
Regardless, religion was always the primary trigger for a crusade. Though religion always played a part, the perceived threat to the church evolved. The first Crusade focused solely on ridding the Holy Land of Muslim forces. The popes began to use crusades to combat any perceived threat against the Catholic Church.