Population is the answer to the blank
<span>The Roman empire was physically united by good roads and bridges and secure sea lanes.</span>
Litigation.findlaw.com › ... › Litigation and Appeals › Filing a Lawsuit<span>Federal courts have subject matter jurisdiction over only two types of cases. ... for failing to have any handicap accessible entrances under the Americans with ... over cases in which the parties to the lawsuit are citizens of different states, ... a primary residence, and an individual can only be a citizen of one state at a time.</span>
