How did the u. s. military recruit the 4 million americans who served during world war 1?

Before world war 1 started, austria-hungry was wary of (spain or serbia) because of border disputes

Nationalism led to major conflicts following world war i, especially when:

Plz which of the following statements about life in europe during the middle ages is not accurate. a. by the middle ages the only unifying factor in europe was christianity. b. most people lived in rural areas and worked on farms. c. priest, monks and church officials were virtually the only people in europe who could read and write d. most people lived in cities or towns and worked as skilled artis most people lived in cities or towns and worked as skilled artisans.