<a href="https://en.wikipedia.org/wiki/World_War_I" id="mw2g" rel="mw:WikiLink" title="World War I">World War I</a>: The <a href="https://en.wikipedia.org/wiki/Selective_Service_Act_of_1917" id="mw2w" rel="mw:WikiLink" title="Selective Service Act of 1917">Selective Service Act of 1917</a> is passed, giving the <a href="https://en.wikipedia.org/wiki/President_of_the_United_States" id="mw3A" rel="mw:WikiLink" title="President of the United States">President of the United States</a> the power of <a href="https://en.wikipedia.org/wiki/Conscription_in_the_United_States" id="mw3Q" rel="mw:WikiLink" title="Conscription in the United States">conscription</a>.