<a href="https://en.wikipedia.org/wiki/World_War_I" id="mw6A" rel="mw:WikiLink" title="World War I">World War I</a>: U.S. President <a href="https://en.wikipedia.org/wiki/Warren_G._Harding" id="mw6Q" rel="mw:WikiLink" title="Warren G. Harding">Warren G. Harding</a> signs the <a href="https://en.wikipedia.org/wiki/Knox–Porter_Resolution" id="mw6g" rel="mw:WikiLink" title="Knox–Porter Resolution">Knox–Porter Resolution</a> formally ending the war between the United States and <a href="https://en.wikipedia.org/wiki/Weimar_Republic" id="mw6w" rel="mw:WikiLink" title="Weimar Republic">Germany</a>.