What was al-ma’mun’s contribution to the islamic golden age

Islamic golden age started in the eighth century and lasted until the fourteenth century. It is referred to as golden age because scholarship, invention, and discovery all thrived, and many discoveries were made in the field of chemistry, medicine, philosophy, and metaphysics. The golden age started with the establishment of the House of Wisdom by Harun-Al Rashid in the city of Baghdad. It became a hub of translation activities, scholarly works from China, Greece, Persia, and India were translated in Arabic. Due to the Baghdad became a center of Knowledge, inventions and scientific discoveries. If Harun-Al Rashid would not have established the house of wisdom, there wouldn't have been significant progress in medicine, algebra astronomy.

not sure but thinking i'ts cause the government was broke. not sure

islam spread slowly through much of africa through trade and preaching.