During the war, prosperity had already come back to the US after the depression times. The economy after the WWII experienced an impressive and sustained economic growth era which lasted until the 1973 recession. The US became the richest and most powerful country and economy in the world.
Growth was caused by several factors: the automobile industry, the housing boom, the increase in military and defense spending due to the arrival of the Cold War, the switching towards the focus on production of services rather than goods, working conditions had improved, gains in productivity for farmers,etc.
Sigmund Freud (writing between the 1890s and the 1930s) developed a collection of theories which have formed the basis of the psychodynamic approach to psychology.
World War one started on the 28th of July 1914 between two sides; The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism. The overall cause of World War was the assassination of Archduke. As you can see Nationalism had made a big dent in Countries
Wheat reached a peak for the last 16-month period on July 18, 1929, when the price was $1.40 cents a bushel,4 and dropped to a low of $0.96 on March 15, 1930—a decline of 31.4 per cent.
