The Mongol Empire reached its peak in the 13th century, and its territory extended from Europe to Asia.

He is studying the history of the Roman Empire.

Genghis Khan was the founder of the Mongol Empire, and under his rule, the empire built its largest territory.

The history of the German Empire is very interesting.

The history of the German Empire is very interesting.

The Ottoman Empire was once a powerful empire that existed in the Middle East.

Imperialism has played a significant role in history.

The history of the British Empire is very interesting.

The Byzantine Empire is a state that developed from the eastern part of the Roman Empire.

The Byzantine Empire, also known as the Eastern Roman Empire, was a powerful empire with a long history.