The ancient Egypt workers were paid in products, such was grain becuase gold and metal would be scarce if they were all paid with gold.
A.
The Americans were able to find out about the planned attack the Japanese were plotting; and were able to counter it.
The Japanese got most of their navy whipped.
The u.s new an attack was coming but they didn't know when, as a result they were unprepared and lost a lot of their stuff
One of the reasons was the blocked transportation routes, another was they were giving so many materials to the army to win they put aside their other business to focus on that