The best answer is:
Samuel Morse and the telegraph
Robert Fulton and the steamboat
<span>Cyrus McCormick (Inventor of the Mechanical Reaper) so its improved because he invented a better one than ones already invented
</span>hope this helped :)
The right answer is: The Americas :)
C. 'pax' means peace in latin, and 'Romana' means Roman, so it literally translates to "Roman Peace", which was a time of create peace and a time when the cultures flourished. :)