A new analysis of where “innovation” jobs are being created in the United States paints a stark portrait of a divided economy where the industries seen as key to future growth cluster in a narrowing set of places.

Divergence in job growth, incomes and future prospects between strong-performing cities and the rest of the country is an emerging focus of political debate and economic research. It is seen as a source of social stress, particularly since President Donald Trump tapped the resentment of left-behind areas in his 2016 presidential campaign.

Research from the Brookings Institution released on Monday shows the problem cuts deeper than many thought. Even cities that have performed well in terms of overall employment growth, such as Dallas, are trailing in attracting workers in 13 industries with the most productive private sector jobs.

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