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When a nation is at war, it needs weapons and supplies that are produced by industry, in order to fight effectively.
what industry supported the efforts of the office of war information (OWI)
Empires of Industry - 1997 War Planes of World War II was released on:
USA: 1998
media
To increase the production of war materials
The War Production Board (WPB) was created to oversee the conversion of peacetime industry to war industry.