The United States have fought a lot of wars. The U.S. prepared for war by the act of creating or building- up the military in preparation for deployment, they also do so by initiating a draft.
The president can issue Liberty Bond and advocate for public participation so as to raise money for the war efforts. The military through the draft, people volunteer to fight for thier country.
US prepare for World war 1 through the financing, transportation, equipment, food, and men. Through the call for public support, people gave voluntary to support war.
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