U.S. Route 20 in Massachusetts
... that U.S. Route 20 in Massachusetts used to be part of the Boston Post Road, one of the earliest roads established in the United States?
... that <b id="mwDhA"><a href="./U.S._Route_20_in_Massachusetts" id="mwDhE" rel="mw:WikiLink" title="U.S. Route 20 in Massachusetts">U.S. Route 20 in Massachusetts</a></b> used to be part of the <a href="./Boston_Post_Road" id="mwDhI" rel="mw:WikiLink" title="Boston Post Road">Boston Post Road</a>, one of the earliest roads established in the <a href="./United_States" id="mwDhM" rel="mw:WikiLink" title="United States">United States</a>?