Answer:
because they didn't have to be paid and they could be put in harsher working conditions
Explanation:
France, Italy, Russia, British Empire
WWI tanks were used to lead infantry advances across no mans land (option a ). It was a welcome development, as it was hoped it would help ending the long and casualties provoking trenches type of war.
Sometimes they figure out how to build better shelters or learn better farming and hunting techniques for the environment they live in
He was the Vice President for President Eisenhower that served at that time period. (I LIKE IKE!!!!)