In the past, when population grew, there was unexplored territory to inhabit. But now, almost all the habitable land has been explored.

在过去，人口增长的时候，有未开发的土地开发出来用于居住。但是现在，几乎所有的居住用地已经开发殆尽。

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In Nebraska, the Latino population jumped 77% between 2000 and 2010, when the state's population overall grew 7%.

WSJ: U.S. Hits a Demographic Milestone

It has its own economy and got two homegrown banks in the mid-2000s, when the population of Little Saigon grew by 30%.

WSJ: A Bank Zombie Lurks in Little Saigon

Unfortunately, that prosperity could not be sustained during the 19th century, when the lands grew less fertile, and much of the population left for more profitable fields.

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