The <a href="https://en.wikipedia.org/wiki/Sixteenth_Amendment_to_the_United_States_Constitution" id="mwnw" rel="mw:WikiLink" title="Sixteenth Amendment to the United States Constitution">Sixteenth Amendment to the United States Constitution</a> is ratified, authorizing the <a href="https://en.wikipedia.org/wiki/Federal_government_of_the_United_States" id="mwoA" rel="mw:WikiLink" title="Federal government of the United States">Federal government</a> to impose and collect an <a href="https://en.wikipedia.org/wiki/Income_tax" id="mwoQ" rel="mw:WikiLink" title="Income tax">income tax</a>.