Final answer:
The United States' entrance into World War I included the first war fought by the country, the use of a draft prior to entrance, and leadership by General Pershing.
Step-by-step explanation:
OA. This was the first war in which the United States fought.
OB. This was the first war in which a draft was used prior to entrance into the war.
OD. The AEF would be led by General Pershing.
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