Question

why did slaves and clients led to political instability

Answer 1

But this also led to some political instability creeping in. The slaves and clients were very loyal to their masters and patron. But they were not loyal to their heirs. New Sultans had their own servants and hence often there was conflict between the old and new nobility whenever there was an accession.

Answer 2

Explanation:

the slaves and clients often rose up to political instability to rise up the political ladder and intelligency. They wanted to become head of slave dynasty and protect their own land, thats why they were loyal to their kings to learn the actual knowledge to rule a kingdom and formed their own slave dynasty containing slave sultans or mumlaks.