最后再对北周最终能统一北方的历史原因从各个角度进行了简要探析。

Finally, this thesis makes a brief analysis about the historical reasons from various angles why in the end the Northern Zhou Dynasty unified the North.

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举办这一生日庆祝活动的第二个原因是为了缓和与日益强盛的北方联盟的关系。许多这一联盟的成员把统一作为国力不盛的一个原因。

The second reason its birthday party will be muted is the growing power of the Northern League, many of whose members regard unification as a cause for lament.

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美国铁路直到十九世纪八十年代才采用统一的轨幅，这就使得南北方铁路间的互连不但非常复杂而且缓慢、昂贵。

Railroads in the United States did not settle on a uniform gauge until the 1880s, making interconnections between lines in the North and South complicated, slow, and expensive.

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Now, think what's at stake here in this worldview, especially as we transition next Thursday to a developing though by no means unanimous or homogenous northern worldview in which reform impulses get embedded.

想想在这种世界观中最薄弱的是什么,特别是我们下周四要过渡到,一个发展中的并非统一或同质的,嵌入了改革的冲动的北方世界观

耶鲁公开课 - 美国内战与重建课程节选