What made Amir Abd al-Rahman more powerful after being named the ruler of Cordoba? can i get a short sentence so i can just get the idea of it??

hi!

your answer is b

hope this !

~courtney

i would go with the last one

i believe the answer is d.

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: