Entre 714 y 756 al-Ándalus fue un emirato dependiente de Damasco, gobernado por un valí y sumido en tensiones. La estabilidad comenzó con la llegada de Abd al-Rahman I, de la dinastía omeya, que convirtió la Península en un emirato independiente.
B is the answer to your question
A. It's exact origin is unknown
No branch is stronger than the other. This is because of the two types of checks and balances that are established. If one governmental branch became too strong, the other branches would be able to neutralize such through its given powers. The second type granted is embedded in the institution, in which each branch is secure against each other.
