自然地，世界不同国家和地区存在重大的差别，但这张图提供一个有益的起始架构。
Naturally, there will be important differences between different countries and regions of the world, but this provides a useful starting framework.
当今世界，有200多个国家和地区，2500多个民族，6000多种语言。
The world today is home to over200 countries and regions, more than 2, 500 ethnic groups and 6, 000-plus languages.
当今世界，有200多个国家和地区，2500多个民族，6000多种语言。
The world today is home to over200 countries and regions, more than 2,500 ethnic groups and 6,000-plus languages.
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