Lectures on the history of Islamic nations, the Abbasid state

Abbasid history is a great part of the history of Muslims, starting from the year 231 AH to the year 656 AH. After that, the Abbasid house continued to have the name of the Caliphate in Egypt until the year 329 AH. The emergence of this state caused a shock in the entire world, and the sciences in it rose widely, making its era truly "the era." The Golden State of Islam" and eminent men from ancient houses of glory and self-made people who competed to conquer Islamic regions appeared in it....