Why did the abbasid dynasty encourage, but not force, non-muslims to convert to islam? pleas hurry

a they needed the income from taxes assessed on non-muslims.
b they struggled to communicate because many non-muslims did not understand arabic.
c islam's holy book teaches respect for all knowledge and people of faith.
d they were more concerned with increasing the size of their empire.

a. They needed the income from taxes assessed on non-Muslims.

Explanation:

The main reason why the Abbasid dynasty encouraged, but did not force, non-Muslims to convert to Islam was because they needed the income from taxes assessed on non-Muslims. Based on this, we can conclude that their reasons were mostly economic ones. If the Abbasid empire became homogeneous, they would not be able to enjoy the benefits that a diverse empire gave them.

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: