What was the contribution of the Arab Islamic civilization to the cultural history of the Middle Ages?

First of all, the contribution of the Arab-Islamic civilization to the culture of the Middle Ages can be attributed to a more organized disciplined society, obedience to human will before God. Also, one of the main features of this culture can be attributed to the harsh rule of the authorities, slavery and the almost complete absence of any rights among the lower strata of society. Superiority of the authority of power.