WORLD HISTORY

Detailed explanation-1: -The main technological achievement of the Abbasid Caliphate was the introduction of paper from China, which slowly spread to the rest of the Muslim world before reaching Europe in the 10th century.

Detailed explanation-2: -Muslims also expanded the practice of medical schools and hospitals. The Abbasid caliph Harun al-Rashid used the Sasanian academy of Jundishapur in southwestern Iran as his model when he founded his own hospital in Baghdad (ca. 800). Hospitals were soon established throughout the empire.

Detailed explanation-3: -The Abbasids, who ruled from Baghdad, had an unbroken line of caliphs for over three centuries, consolidating Islamic rule and cultivating great intellectual and cultural developments in the Middle East in the Golden Age of Islam.

Detailed explanation-4: -One way the Abbasid dynasty was able to spread written knowledge so quickly was their improvements on printing technology they had obtained from the Chinese; some historians believe this technology was taken after the Battle of Talas between the Abbasid Caliphate and the Tang Dynasty in 751.

Detailed explanation-5: -Islamic mathematicians such as Al-Khwarizmi, Avicenna and Jamshīd al-Kāshī made advances in algebra, trigonometry, geometry and Arabic numerals. Islamic doctors described diseases like smallpox and measles, and challenged classical Greek medical theory.