How did a growing sense of nationalism contribute to the decline of the ottoman empire? ethnic rivalry caused military conflicts throughout the empire. some ethnic groups successfully declared their independence. ethnic groups wanted to remain part of the empire. ethnic rivalry weakened the resolve of the empire’s nationalism.

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.