What events led to the british defeat at saratoga?

Which one of these were common aspects of war efforts during world war 1 1. rationing 2. war bonds 3. using schools as military facilities 4. child soldiers 5. women working in factories circle all that apply

Dalton developed the first model of the atom that showed the structure of the inside of an atom

Which of these were effects of mass production techniques used during 1920s