(you are largely looking at the factors which promoted the change away from and collapse of the former regime).
Main factors:
(Write about these two factors only do not include any other factors).
1- Civil society – how it promoted the change
2- political parties – how it promoted the change
(Political systems and institutions?)
this may be useful
https://www.accord.org.za/conflict-trends/democratic-transition-tunisia/
and the end notes are many references may be useful as well
