2. Income inequality in the United States

Over the past few decades, income inequality in the United States, as measured by the relative share of total income earned by the top and bottom 20% of individuals, has increased.

Why has the income gap between the rich and the poor been widening in the United States over this time period?Check all that apply.

Globalization has increased.

There has been an increase in the number of labor markets characterized by tournament pay.

There has been an increase in the power of American labor unions.