What were the key factors that led to the rise and fall of ancient empires like

What were the key factors that led to the rise and fall of ancient empires like the Roman Empire, the Maurya Empire, and the Tang Dynasty? To what extent did the strategies employed by these empires in terms of governance, military, and diplomacy contribute to their longevity or eventual decline? Are there common lessons to be learned from the fates of these empires that can be applied to modern geopolitics and statecraft?