"His heavenly will" indicates to listeners of her speech it is god who wishes.
Most likely, going on a hunger strike to raise awareness about racial injustice. Mainstream civil rights activists advocated a nonviolent approach.
Answer:
The US supplied the allies with raw material, supplies, and money.
Mostly it was exhaustion, lack of supplies, new diseases (and old disease that became more common.) Also cold weather, bandits, and oxen dying on the trip.