of economic isolation that set in in the South, to some extent.

某种意义上的经济孤立脱不了干系
And I'll just say a word quickly,

我要简单阐述一个单词
that don't underestimate the influence here

不要小看了这种现象下的
of an ideology beneath this.

意识形态对此的影响
We usually only talk about Manifest Destiny

当我们谈到跨越密西西比河的西进运动时
when we're talking about the westward movement beyond the Mississippi.

我们一般只认为这是命运天定
We only usually bring it up when we're talking

我们通常只会在谈论
about the Mexican War and its aftermath, or something.

类似墨西哥战争及其影响时才会谈到它
But Manifest Destiny was a very old American idea.

但命运天定是个非常古老的美国观念
It was probably coined by this journalist named O'Sullivan,

一般认为记者奥沙利文发明了这个词
although now there's a new theory that it wasn't.

尽管现在有新理论认为他们并没有联系
I leave it to my expert colleagues in History of the American West

我的同事是美国西部史专家他也许能够