Which is NOT a description of the Persian Empire? Question 4 options:

The Persian army defeated the Athenians at the Battle of Marathon.

Darius I built a network of good roads for communication.

Cyrus allowed conquered peoples to keep their cultures.

The empire extended from the eastern edge of Europe to the western rim of the Indus River valley.

The Persian army defeated the Athenians at the Battle of Marathon

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: