What Is Constantinople AP World History?

If you are interested in studying world history, then you must have come across the term Constantinople. But what is Constantinople in AP World History? In this article, we will delve into the details of this important historical city.


Constantinople was a city located at the crossroads of Europe and Asia. It was founded by the Roman Emperor Constantine in AD 330 and served as the capital of the Eastern Roman or Byzantine Empire for over 1,000 years until its fall to the Ottoman Turks in 1453.

Location and Importance

Constantinople was situated on the eastern edge of Europe, on a peninsula between the Black Sea and the Aegean Sea. The strategic location of Constantinople made it an important center for trade and commerce between Europe and Asia. It also served as a gateway to Europe for many nomadic tribes from Central Asia who migrated westwards.

The Walls of Constantinople

One of the most impressive features of Constantinople was its walls. The walls were built by Emperor Theodosius II in AD 413-414 and stood over 40 feet tall and were over 10 feet thick.

They were built to protect against barbarian invasions from both land and sea. The walls proved their worth when they withstood a massive siege by Arab forces in AD 717-718.

The Hagia Sophia

Another iconic landmark of Constantinople was the Hagia Sophia. It was initially built as a church by Emperor Justinian I in AD 537 but later converted into a mosque after the Ottoman conquest in 1453. Today, it serves as a museum that attracts thousands of visitors every year.


The legacy of Constantinople is immense. Its strategic location made it an important center for trade, commerce, and culture.

The city’s architecture, art, and literature influenced the development of the Byzantine Empire and beyond. Today, many cities in Europe and Asia owe their cultural heritage to Constantinople.


Constantinople was a city that played a vital role in world history. Its strategic location, impressive walls, and iconic landmarks have left an indelible mark on the world. By studying Constantinople, we can gain a better understanding of the historical forces that shaped our world today.