The Roman empire once stretched over three continents.
Alexander the Great; Europe (Greece) , Africa(Egypt) and Asia (Turkey, Persia ) Then The Roman Empire, Also in Europe , Africa, and Asia. Then the Ottoman Empire.,
The Roman Empire extended to parts of three continents: in Europe it covered part of Western Europe and the Balkan Peninsula (south-eastern Europe) , in Asia it covered part of western Asia (west of Iran and north of Saudi Arabia), and in Africa it covered Egypt and the coastal part of the rest of North Africa.
The Persian Empire was established in Asia, North Africa and Eastern Europe. That makes three continents. Your other four continents were not involved.
Afghanistan
Augustus annexed Egypt in 30 BC during the civil wars and extended the borders of the empire in North Africa. He also annexed Galatia (in central Turkey) in 25 BC, Cantabria and Asturias (in northwestern Spain) in 19 BC, Noricum(most of Austria and part of Bavaria in southern Germany and part of Slovenia) in 16 BC, Rhaetia (central and eastern Switzerland, eastern Austria and part of southern Germany) in 15 BC and Pannonia (Eastern Austria and western Hungary) in 9 BC.Augustus turned the Roman protectorate of Illyricum (northern Albania, Montenegro, Bosnia and Herzegovina and coastal and northwestern Croatia) into a province of the empire sometime between 35 and 33 AD.Augustus also fought and expanded deep into western Germany, but was defeated at the Battle of the Teutoburg Forest in 9 AD and withdrew back to the previous frontier of the empire along the river Rhine.
Alexander built his empire on the continents of Europe, Asia and Africa.
Europe, Asia and Africa.
over 30 countries besept constantinople which was a city
The Roman Empire spanned the three continents of Europe, Asia, and Africa, occupying all of the area around the Mediterranean Sea. Some Roman territories/regions outside of Europe included Judea, Egyptus, and Numidia.
The Roman Empire which straddled three continents. But the largest modern world empire would be the British Empire which contained lands in Europe Australia Asia Africa I think South America and in the 1700s, North America
Africa, Asia and Europe