After Black Codes were established in the South, unemployed African Americans could be arrested as vagrants. could take their pick of jobs. often escaped to the North. were returned to enslavement.

A. could be arrested as vagrants

Explanation:

i got it right on edge :)

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.