How does world war 2 impact african americans economicaly, politicaly and socially?

As whites at home went to war, blacks left behind had access to manufacturing jobs previously unavailable to them. They learned new skills, joined unions and became part of the industrial workforce. The 'Double V Campaign' fought for victory at home and abroad. In 1942, African American James G. America's response to World War II was the most extraordinary mobilization of an idle economy in the history of the world. During the war 17 million new civilian jobs were created, industrial productivity increased by 96 percent, and corporate profits after taxes doubled. World War II spurred a new militancy among African Americans. The NAACP—emboldened by the record of black servicemen in the war, a new corps of brilliant young lawyers, and steady financial support from white philanthropists—initiated major attacks against discrimination and segregation, even in the Jim Crow South.

an effect of the steamboat's popularity was that people began building canals in the united states and europe. this was done to find another way to transport goods across the country and in that time, transportation using the river was very slow and dangerous. it depended entirely on manpower and the current of the river. that all changed in the late 1700's when steamboats were introduced. they soon revolutionized travel and trade through the river and dominated the waterways. eventually, other means of transportation took over from the steamboats, but there was a time that they the united states to expand to the west.

i'm not sure i understand what you are trying to ask, if you give more information, that would be most .