As you probably know, Assyria was known to be very fierce. They had an army called "The Ten Thousand Warriors", because whenever someone was killed in battle, the army would get one of the extras to replace them. Kind of like football, but they don't ever come back. That army allowed the Assyrians to conquer many of the lands that they sustained. Usually, they let the people join their kingdom, but if they fought back, then they would be killed. This started leading to the downfall because it made a powerful enemy, the Babylonians. Eventually, the Assyrians conquered the Babylons, and some came in peace, but the Babylonians that escaped grew strong and defeated the Assyrians.
The Assyrians contained many libraries, most of which was not destroyed.
The Assyrians contained many libraries, most of which was not destroyed.