Answer:
New technologies, new methodologies, full labor force, government direction
Explanation:
When war started, the US had to make weapons and outfit our army. This left many holes in jobs that were filed by the men who enlisted to fight. The government directed where it was most important to fill those positions (by women or other laborers), and so kept most supply lines going at the same pace. They encouraged new technology and methodology to streamline how stuff was made in the most efficient ways possible, to minimize the effects of losing many skilled laborers to enlistment. This ensured no one starved, the army was supplied, and things still worked.
