The primary purpose of the Supremacy Clause is to establish the relationship between federal and state powers and the scope of their powers.
The Supremacy Clause is the highest form of law in the U.S. It establishes that in case of a conflict between federal and state laws, the federal law, or the U.S. Constitution, must prevail, this means that the scope of the state laws is limited by the federal's law. This way, the Supremacy Clause prevents states from assuming functions that are only entrusted to the federal government.
Answer: The Muslims controlled all of Europe.
Explanation: After the emergence of Islam and the organization of caliphates, which meant the unification of the Arab tribes in Saudi Arabia, the conquest and spread of new territories began, which also meant the expansion of Islam and Muslim rule in the subjugated territories. The Arabs conquered parts in Asia Minor, Central Asia, then North Africa, Sicily and Southern Spain.
After the acceptance of Islam by the Turkish tribes and the subsequent creation of the Ottoman Empire, the conquest of territories that were already under the Arabs began, but the Turks expanded their conquests in parts of Europe, such as the Balkans. Even in some periods these conquests went even to the walls of Vienna or parts of Hungary, although they were short-lived and the Christian armies were turning Turks at the border that was previously established.
Although the desire of the Turks was to conquer the whole of Western Christian Europe, this has never happened.