I would go with 'Major sandstorms destroyed the crops' because the Indus Valley civilization most likely declined by something affecting the food.
The money that we spent on it. The U.S. would have things like meat mondays where they would send meat to the U.S. soldiers. The U.S. spent a lot of time over in Vietnam. Also all the men that they drafted they had to have money to suit them for battle. about 50-70 percent of the men did not have training. So yes we lost many men in that war.
Answer:
Tobacco was the significant factor of Virginia's growth and slaves were needed to labor the tobacco crops
Thomas Paine's pamphlet "Common Sense"
Answer:
The brilliance of Erwin Rommel 'The desert fox'
and the new tanks from the German Empire (Tiger I, The panther, etc.)
Or you can use the desert. Sand... It got everywhere. Equipment would fail because of that. (Anakin skywalker does not approve. And May the 4th be with you.)