Between 1913 and 1920, Americans amended the federal Constitution four times. Each amendment solidified a major reform: the direct election of senators, the first federal income tax, votes for women, the banning of alcohol nationwide. Taken together, they reflected the progressive view that the Constitution was a living document, able to be adapted to and updated for the nation’s needs. A century ago, most Americans seemed to agree that new circumstances required new tools, and that the federal government would have a key role to play in meeting the challenges of the modern age. Read more here.