Why does the unification of civilization usually lead to prosperity and stability?

It usally causes that because they have 2 diffrent beliefs. Each civilization is diffrent in many ways. If they want to conjoin civilizations, than it will have to be 2 great groups because it is very hard to live with people that worship diffrent, just do diffrent things. There will be hate in the civilizations. Think of it like America. In America we have many diffrent cilvilizations in one country. We have hate in our country. African Americans and whites have tons of disagreements. Also so do Mexicans and whites. Living with diffrent people can be hard. But some people can deal with it in many diffrent ways.

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herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.

the answer is aggresion hope this and mark me as brainiest and add me as friend