-there are politics going on in these states

当时这些殖民地受政治影响
as there always are in any Greek polis.

就像古希腊其他城市一样
There are factions that grow up for one reason or another

政治派系相继出现
and they come into conflict.

他们之间有很多利益冲突
One side wins the argument and the battle,

若是其中一方获胜
and sometimes the ill will is so great

有时候失势的一方面临威胁
that the losing side feels either that it has to flee for its safety,

会离开这个地方以求自保
or it chooses to flee rather than to live under their opponents.

或者是逃离他们的敌对派系的压迫
So, defeated political groups might well

所以政治上失利的一方
--or individuals who were the heads of those groups

或者这方的领导人
might decide they have to get out of town.

会做出决定离开城市
And now that we do have something, namely,

这与我们找到的证据相符