The city of Timbuktu was a Muslim city in West Africa. It functioned as all of the following except?
O Trade center
Center for Scholarship
O Center for theological studies
O Center for military training

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:

i think that the right answer is the aztecs