This app is trash and is pay to get wrong answers

What led to the environmental damage that caused the dust bowl? 1. desert winds emerging from the southwest 2. rotating crops every year and having fallow land 3.overplanting throughout the great plains 4.a year-long drought

How w.e.b. dubois wanted to improve the social and economic situation that existed for african americans during the early 19th century?

What affected the second industrial revolution have on transportation