C. The most important members of this community were found outside the hierarchy of the church government in the monasteries that dotted Europe. ... During the high Middle Ages, the Roman Catholic Church became organized into an elaborate hierarchy with the pope as the head in western Europe. He establish supreme power.
The Great Plains Province is known for having very little rainfall with high temperatures that cause evaporation. As a result, there are two rivers that this province relies upon for its main water source. What are the names of these two rivers?