I'm going with what I learned before and I'm gonna say G
The answer would be government
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 :)
A and B both are true about the Greek religious belief.
America and russia was in the cold war hoped this helped