The Perfect Survival Strategy

There are hundreds of thousands of tribes around the entire earth. And there's always, under this situation, a stronger tribe. So while you or i might go and conquer those a defenceless, weak people over there, we might do that, but then ten years later, some stronger tribe comes and conquers and enslaves us. Do we like that? No, we don't like that. Then see that stronger tribe even when it conquers us, some even stronger tribe will come and conquer them and enslave them. That was the whole point of conquering other cities,. which is why you see they build these massive walls, because that wall is the only thing that's keeping you from