Because some people are crazy
It increases as they need to ship supplies to the army for medical uses or ammo such like. They need to rapidly produce weapons and ammo so that they can continue to fight on. Medicine such as penicillin was mass produced as it stopped infection rate so the mass production of that drug helped in ww2
Really hope this helps :)
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The Bourbon sovereignties
And The first ruler of the Bourbon dynasty was King Henry III of Navarre.
They were made the year of 1939 :) Hope this helped!!