Answer:
C
Explanation:
Samuel Morse developed the Morse Code. David Atler invented the telegraph itself. I would also dispute standardized pricing. Other things made standard pricing difficult, like transportation costs.
Decline of Sumer:
Poor irrigation reduced agricultural yields.
Population moved.
Elamite invasion.
Jacksonian democracy is associated with "Rejection of a national bank"--Jackson was known as the president of the "common man" and hated the idea of large central powers.
Baron de Montesquieu was a French political analyst who lived during the Age of Enlightenment. He is best known for his thoughts on the separation of powers.