A test that asks questions about Confucianism. Depending how well the test taker scored, that determined what position in the government they could have.
As the Islamic world splits up into new governments and different territories split away from Abbasid control, the region remains united through their cultural and religious ties to Islam
As political power of the Abbasid Caliphs decline and revolts broke out in various parts of the Abbasid Caliphate, the government began to fracture (split apart)
Buddhism which formed in India spread to Southeast Asia and China and changed into three different branches: Theravada[original], Mahayan[east asian], and Vajrayana[tibetan]