Answer: a. The War Production Board helped factories quickly shift from only making consumer goods to making war materials.
Explanation:
A key part of the U.S. being able to join the Second World War and contribute so effectively in the time that it did, was the War Production Board's efficiency in shifting American consumer production to war materials for use by the U.S. military and the Allies.
Thanks to the Board, companies shifted their focus from consumer goods even though there was initially some massive pushback. Following a national campaign, opposition subsided and the U.S. was able to pump out so much war material that the war would not have been won without.
Liberty, Equality and fertility
One cause of the unparalleled material abundance of the United States in the 1950s is the population where in the population likely increase for about thirty million-- contributing to the unparalleled material abundance in the United States during the 1950s.
Yurovsky, the executioner of the Russian Imperial Family, left a detailed account of the events that transcurred on the night of July 16th, 1918, when the Romanov family was assassinated. In it, he describes the scene with the tsar Nicholas II in the following way:
"...so far as I can remember, I said to Nicholas approximately this: His royal and close relatives inside the country and abroad were trying to save him, but the Soviet of Workers' Deputies resolved to shoot them. He asked "What?" and turned toward Alexei. At that moment I shot him and killed him outright. He did not get time to face us to get an answer."