At the same time, given the realities of today's world, we can no longer approach our foreign policy solely country by country, or simply by carving the world into separate regions.

同时，鉴于当今国际现实，我们的外交政策不能再仅仅是逐个针对各个国家或仅仅是将世界分成各个地区。

Before 1492, we couldn't really talk about a world history at all, we could only talk about the different histories of separate regions, but Columbus changed all of that, and everything else.

1492 年之前， 我们根本无法真正谈论世界历史，我们只能谈论不同地区的不同历史， 但哥伦布改变了这一切， 以及其他一切。