Answer:
D. -30
Explanation:
Multiply the numbers, calculate the sum and difference.
The Maginot line was a large fortification that ran along french/German borders, it became liability when Germans attacked France in 1940 using blitzkrieg -that is a tactic that emasculated the Maginot lines purpose.
Answer:
governments converted factories to produce military supplies
A is NOT a reason they built roads.