Fascism rise in Italy because of disappointment of Paris Peace conference,unemployment, and rising inflation.
How prices serve as an incentive in a market economy is whenever there is a decline in the supply of a particular commodity, what the suppliers do is increase the prices, and in contrast, when there is enough supply, they decrease the prices as well. Hope this answers your question.
Workers formed unions in the late 19th century to get higher wages shorter work hours and a 5 day work a week
I am assuming you are talking about the US. So in the North they have Rocky Poor Soil.