Answer:
They used religion and laws to bolster their legitimacy
Step-by-step explanation:
According to the excerpt given, some envoys were sent by the King of Ethiopia and one of them, an Italian who claims to have lived in Ethiopia for over forty years recounts how the land is peaceful and bolstering because most people are Christians, including the King.
The key similarity in the policies of the rulers of African states such as Ethiopia between 1200-1450 was that they used religion and laws to bolster their legitimacy