Assyria's military power and well-organized government helped conquer a vast empire in Mesopotamia by 650 BC. It did not hurt that there was already a substantial population in Mesopotamia who could be harnessed both for their agricultural ability, but also to be draft soldiers in the Assyrian Army.
The premise of this question, namely that Assyria was defeated by the Persians and/or Medes is incorrect. The Assyrian Empire was only ever defeated by the Babylonian Empire. These defeats were brought about by internal strife within the Assyrian Kingdom. The Persians were able to conquer Babylon and acquire the previously conquered Assyria.
They were not - Assyria gained an empire by conquest, the Carthaginian empire was a trading one.
Assyria
no
The extent of his empire was: Assyria , Medditeranian Sea, and Syria
Assyria was an empire in Asia.
Babylonia did.
Strength in numbers.
because fried chicken is my favorite
The Medians and the Chileans overthrow the Assyrian empire.
Well, isn't that an interesting question! You see, Israel was more vulnerable to the Assyrian empire because they had a weaker political structure and faced internal instability. Meanwhile, Judah had a stronger monarchy and was able to maintain better alliances, which helped protect them from Assyrian aggression. It's all about strength in unity and standing together, just like how happy little trees support each other in a painting.
Assyria conquered Israel, then Babylon conquered Assyria and Judah, then Persia conquered Babylon, then the Seuclid Empire conquered Judah, then the Judeans revolted, then Rome conquered Judah, then the Islamic Caliphate conquered the Byzantine Empire (the remains of the Roman Empire). The Ottoman Empire conquered Judah from the Cusaders who had conquered it from its Islamic rulers. Then the British Empire took it from the Ottomans.