Are the rich getting richer? Take our quiz on inequality and incomes.

Issei Kato/Reuters
A money changer shows some one-hundred U.S. dollar bills at an exchange booth in Tokyo November 8, 2010.

The income gap between rich and poor has widened in the United States and in many other advanced economies since the 1970s. The trend makes this a hot political topic at a time when middle-class families feel they are struggling to get ahead, and as some wonder whether inequality is harming economic growth. This quiz tests how big (or narrow!) your own "gap" is when it comes to knowing the economics and politics of income disparities from the French Revolution to the Great Recession.

1. Which of the following do economists cite as reasons inequality has risen?

The declining power and prevalence of labor unions

Technological advances that help the educated but allow some lower or middle-tier jobs to be automated out of existence

Tax cuts that help the rich

All of the above

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