The poverty rate in the modern united states has stayed near 10-15% over the last 40 years. among the reasons for this are:

a. low-skilled immigration
b. legacy of slavery and racism
c. breakdown of the family
d. economic exploitation
e. all of the answers are correct

e. All of the answers are correct

Explanation:

Low-skilled immigrants usually take jobs that pay the minimum wage or (illegally) less, for example, in the fruit-picking business, where wages are very low, and most of the labor force consists of low-skilled immigrants, many of them, undocumented.

Legacy of slavery and racism also causes and perpetrates poverty, especially among African Americans, because many of them are born to structural poverty and are victims of structural racism. (housing discrimination, less job opportunities, less funding in inner city schools, etc).

Breakdown of the family also produces poverty. Single-parent households have higher poverty rates than two-parent households, mostly because of the fact that two people working usually earn more than just one. Sometimes the single parent is disabled or ill, cannot work, and becomes dependent on government handouts.

Finally, economic exploitation also contributes. As stated above, many low-skilled immigrants are illegally paid less than the minimum wage, and many companies underpaid their workers.