Constantinople was once the capital of the Byzantine Empire.

The history of Byzantium is very interesting.

Tokyo is the capital of Japan.

He is studying the history of the Roman Empire.

I work in the capital city area.

I was born and raised in the National Capital Region.

Imperialism has played a significant role in history.

The history of the British Empire is very interesting.

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

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