The Ottoman Empire.
The Ottoman Empire ruled most of the Middle East from the 1500s until World War 1.
No one ruled Europe in its entirety. The Roman Empire was the largest country in Europe before the Middle Ages, and it was ruled by its emperors. There is a link below to a list of the Roman Emperors, and those who were emperors before 476 AD were emperors before the Middle Ages began.
No foreign tribe ruled Rome before the Roman Empire.
It was part of the French Empire: France.
It was very important. It ruled the world as the second incarnation of the Roman Empire.
The Holy Roman Empire
No empire, including Rome and Babylon, ever ruled the world. No empire ever conquered the whole world. The biggest empires in history were the British Empire, the Mongol Empire, the Russian Empire, the Spanish Empire and the Umayyad Caliphate.
THE ISLAMIC REPUBLIC OF IRAN is the only country in the world, and specifically in the Middle East, that is currently (or has ever been) ruled by an Ayatollah. (Previous Shiite Theocracies, like the Safavid Empire, were still ruled by monarchs and the Ayatollahs had an advisory role, but no direct power.)
The Roman Empire did. They ruled all of Britain and France and so on. We did not know America existed then so it was not ruled.
No, Turkey has never ruled most of the world. Historically, the Ottoman Empire, with its center in present-day Turkey, ruled a significant portion of the Middle East, North Africa, and parts of Europe, but not the majority of the world.
The medieval empire in central Europe was the Holy Roman Empire.
Romulus Augustus