How many delegates met at the Continental Convention?

55

Explanation:

Four years after the United States won its independence from England, 55 state delegates, including George Washington, James Madison and Benjamin Franklin, convene in Philadelphia to compose a new U.S. constitution.

55 delegates met at the Continental Convention.

I believe the correct answer is that some ethnic groups successfully declared their independence.
The Ottoman Empire included many countries all over the world, and not all of them were satisfied with being ruled by a foreign country. Thus, they wanted to rebel and fight for their own independence and sovereignty, and ultimately they won, leading to the downfall of the Ottoman Empire.