Answer:
C. Rivers provide a transportation route.
Explanation:
OK so basically in the middle ages Spain was ruled by the Muslim moors <span />
Explanation:
after earth cooled down from being a large ball of molten lava , the water vapour in gaseous state turned into liquid and it poured rain for thousands of years filling all the oceans we see now and as the rocks were filled with salts and minerals the ocean became salty
