3 ms·If one civilization has existed over millions or billions of years it does.by castis 8y agoIf one civilization has existed over millions or billions of years it does.krapp 8y agoA civilization can exist over millions or billions of years and still not maintain the same culture, or goals from one generation to the next. It's no different.castis 8y agoYes, but it is impossible to prove that civilizations that remain the same over millennia dont exist.