<P> When the automobile arrived about 1910, the state had poorly constructed dirt roads used for wagon traffic, and an outdated system of taxation . Road improvement continued to be a local affair controlled by individual county supervisors for each beat in the counties; they achieved few positive results . The Lindsey Wagon Company of Laurel built the famous Lindsey wagon after 1899 . It was a heavy - duty eight - wheel wagon used to haul logs, timber, and other bulky and heavy material . Wagon production reached a peak in the 1920s, then declined . Improved roads finally made it possible for residents to use trucks built in Detroit . The Great Depression after 1929 reduced the need for new wagons . </P> <P> After 1928, the need to build roads motivated politicians to talk up the cause . They enacted massive bond issues, created excise taxes, and centralized control to create a genuine state highway system, with a system of main highways designed by engineers, using a common system of signage and nomenclature . </P> <P> The war years brought prosperity as cotton prices soared and new war installations paid high wages . Many blacks headed to northern and western cities, particularly in California, as part of the second and larger wave of the Great Migration . White farmers often headed to southern factory towns . Young men, white and black, were equally subject to the draft, but farmers were often exempt on occupational grounds . The World War II era marked a transition from labor - intensive agriculture to mechanized farming in the Delta region of Mississippi . Federal farm payments and improvements in mechanical cotton pickers made modernization economically possible by 1940, but most planters feared loss of racial and social control and simply shifted their workers from sharecropping to wage labor . As workers left the farm for military service or defense jobs, farm wages rose . By 1944, wages had tripled . In 1945 the newly established Delta War Wage Board provided planters temporary relief by setting a maximum wage for farm workers, but President Harry S. Truman lifted wartime economic controls in 1946 . </P> <P> Beginning in the 1930s, the ravages of the boll weevil and federal crop restrictions and conservation programs encouraged many farmers to turn from cotton farming to growing other crops, such as soybeans; to sowing grasses for livestock; and to planting trees for timber . Agricultural productivity increased, and the soils were improved by crop rotation, strip planting, terracing, contour plowing, and the use of improved fertilizers, insecticides, and seeds . After 1945, farm mechanization advanced rapidly, especially in the Cotton Belt, and small farms were consolidated, as small farmers who could not afford the new machinery and sharecroppers left the land . Planters rapidly mechanized . It took only a few operators of cotton - picking machines to do the work of hundreds of laborers . The sharecroppers could find no other work, and this system collapsed after they moved to the cities in the North and West . By 1950 whites were a majority of the population statewide and in every region outside the Delta . </P>

How did mississippi economy change after world war 2
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