2 ms·
the US at its largest extent was about 50% larger than the roman empire at its largest extent (http://en.wikipedia.org/wiki/List_of_largest_empires#All_empires_
by throw_away 16y ago
the US at its largest extent was about 50% larger than the roman empire at its largest extent (http://en.wikipedia.org/wiki/List_of_largest_empires#All_empires_at_their_greatest_extent http://en.wikipedia.org/wiki/List_of_largest_empires#All_emp...)