The Dust Bowl was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s; severe drought and a failure to apply dryland farming methods to prevent the aeolian processes (wind erosion) caused the phenomenon.
37. 27x^3-12x^2
40. 5x^4y^6+30x^5y^4
49. 10x-1x-2
The greatest advantage of United States in world war II was its ability to rapidly transition from peace to war and mass produce weapons and war equipment at a colossal scale. This was so effective that the USA was able to make up for time lost, and the nation was able to effectively train the necessary forces and then exert a massive material superiority.
America was able to build up an air force that came to dominate the skies, and with this air superiority, it was all but over for the enemy, the Axis forces.
The answer you might be looking for is:
The Fourth Estate was made up of peasants and city workers.
Why? The Fourth Estate also had the bourgeoisie, The bourgeoisie were wealthy but unlike the nobility had no inherited titles.
