Which factor contributed to the creation of the farmers' alliance?

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 did the constitution of 1917 try to resolve some of the problems that started the mexican revolution

How did the new working class of the industrial revolution differ from the working classes of the earlier, farm based economy?