Answer:
After resisting attacks for hundreds of years, the city of Constantinople fell to the Ottoman Empire.
Step-by-step explanation:
The fall of Constantinople took place due to the assault to the city that took place in the early morning of the 29 of May of 1453 on the part of the Ottoman Empire, that tried to conquer the city from for more than 50 years.
Mehmed, head of the Ottoman troops, launched a complete offensive to the walls of the city. For more than two hours, the Turkish army attacked without defeating the Byzantine resistance under the command of the Genoese military Giovanni Giustiniani Longo.
Both Constantine XI and Guistiniani died on the battlefield. Shortly after, Mehmed entered the city.
Constantinople since then was called Islambul (now Istanbul) becoming the new capital of the Ottoman Empire.