Fall of Constantinople

The Fall of Constantinople was a major historical event that happened on 29 May 1453. It was when the Ottoman Empire captured the city of Constantinople, which was the capital of the Byzantine Empire. The Ottomans, led by the young Sultan Mehmed II, laid siege to the city for 53 days. After the siege, Mehmed made Constantinople the new capital of the Ottoman Empire.

This event marked the end of the Byzantine Empire, which was the continuation of the ancient Roman Empire. Many historians consider the fall of Constantinople to be the end of the medieval period and the start of the early modern period.

The city's strong walls, known as the walls of Constantinople, had protected it for centuries. However, the Ottomans used advanced weapons like gunpowder and huge cannons called bombards to break through these walls. This showed how warfare was changing during that time in military history.

Background

Constantinople had been an important imperial capital since the year 330. Over the next thousand years, the city was attacked many times but was only captured once during the Fourth Crusade in 1204. After that, the city was taken back by the Palaiologos dynasty in 1261.

By 1450, the Byzantine Empire was very weak and small. The city of Constantinople had lost many people and looked more like a few villages with big open spaces between them. The empire had shrunk to just a few areas around the city, the Princes' Islands in the Sea of Marmara, and parts of the Peloponnese.

Preparations

When Mehmed II became sultan in 1451 at age 19, many in Europe thought he wouldn’t challenge Christian control in the Balkans or the Aegean. They celebrated his rise, hoping his inexperience would lead the Ottomans astray. But Mehmed’s friendly words to European envoys didn’t match his actions. By early 1452, he began building a new fortress (Rumeli hisarı) on the European side of the Bosphorus, north of Constantinople. This fortress, along with another called Anadolu Hisarı, gave the Ottomans full control of the Bosphorus strait.

Mehmed also prepared for war by stationing troops in Greece to prevent aid from reaching Constantinople. He improved roads to move his massive cannons and gathered workers to strengthen them. The Byzantine emperor, Constantine XI Palaiologos, realized Mehmed’s plans and looked to Western Europe for help, but faced difficulties due to old conflicts between the eastern and western churches.

European support

Emperor Constantine XI sought help from Western Europe, but old divisions between the eastern and western churches made this difficult. Efforts to unite the churches had failed, causing resentment and resistance in Constantinople. By late 1452, Constantine promised to implement the union, but Western support was limited. Some individuals, like Cardinal Isidore and soldier Giovanni Giustiniani, came to help defend the city, but the overall assistance from Western kingdoms was insufficient due to ongoing wars and conflicts elsewhere.

The Great Chain of the Golden Horn

To protect against naval attacks, Emperor Constantine XI ordered a strong defensive chain placed at the mouth of the Golden Horn harbour. This chain, floating on logs, could block any Turkish ships from entering. The Byzantines also repaired and strengthened their famous land walls, especially the section at Blachernae, to improve their defenses.

Strength

The defense of Constantinople was led by Emperor Constantine XI with about 7,000 defenders, including 2,000 foreigners. The city’s population had declined, affecting its ability to defend itself. The Ottoman forces, commanded by Mehmed II, were much larger, with estimates ranging from 50,000 to 80,000 soldiers, including elite Janissaries and many cannons. The Ottomans also built a large fleet to attack from the sea and prepared powerful cannons to break through the city’s walls.

Siege

The Ottoman Empire, led by the young Sultan Mehmed II, laid siege to the city of Constantinople for 53 days in 1453. Mehmed's forces were much larger than the defenders of the city, who were led by Emperor Constantine XI. The Ottomans used large cannons to try to break through the city's strong walls, but the defenders made repairs after each attack.

The Ottomans also tried to get around the city's defenses by moving their ships over a special path and into the area known as the Golden Horn. Despite several attempts to stop them, the Ottomans managed to get their ships into this area. After many attempts to break through the walls, the Ottomans finally launched a large attack on the city. During the fighting, the defenders were overwhelmed, and the city fell to the Ottoman forces. Many people tried to escape, and the city faced a difficult time ahead.

Atrocities

After the city fell, Sultan Mehmed II allowed his soldiers to loot parts of Constantinople. Many churches were damaged, and the city was left in ruins. While Mehmed tried to stop a full destruction, much of the city was harmed during the chaos.

Unfortunately, many terrible things happened to the people of Constantinople. Some were killed, and others were taken away as slaves. Many suffered greatly during these difficult days.

Aftermath

After capturing Constantinople, Sultan Mehmed II promised his soldiers three days of plunder. However, he quickly stopped the looting and allowed Christians who had escaped capture to return to their homes. He also restored property to those who had left the city before the siege. The Hagia Sophia was turned into a mosque, but the Greek Orthodox Church was allowed to continue.

The fall of Constantinople shocked many Europeans, who feared other Christian kingdoms might suffer the same fate. Some suggested another Crusade to fight back, while others thought dialogue with the Ottomans might be better. Many Greek scholars fled to Italy, bringing important knowledge that helped start the Renaissance.

Legacy

Many legends grew up in Greece about the fall of Constantinople. Some people believed that a lunar eclipse and strange lights in the sky were signs that the city’s time had come. Others told stories of priests who vanished into walls and would return when the city was freed.

The fall of Constantinople had a big effect on European culture. Scholars from the Byzantine Empire moved to Western Europe, bringing with them ancient Greek and Roman knowledge. This helped start the Renaissance, a time when art, science, and learning grew strongly in Europe. The city was renamed several times, finally becoming known as Istanbul in 1930.

Main article: Greek scholars in the Renaissance

Primary sources

For the fall of Constantinople, historians have collected accounts from people who saw it happen and from others who wrote about it later. There are 15 eyewitness accounts, including writings from leaders, merchants, and church officials. These include Sufi holy man Mehmed Şems el-Mille ve'd Din, Venetian physician Nicolò Barbaro, and Eastern Catholic churchman Isidore of Kiev.

There are also 20 accounts from people who did not see the event but wrote about it based on stories or other sources. These include Byzantine historians like Doukas and later writers such as traveller Evliya Çelebi. These accounts help us understand what happened during this important historical moment.