Under Abu Bakr, Islam only regained ground lost in the dissension that occurred among the tribes that had united with Mohammed during the Prophet's life. Islam did spread considerably during the reigns of the subsequent Caliphs due to the conquests of Islamic Armies. 'Omar, 'Othman, 'Ali, Mu'awiya, and Yazid I all expanded the reach of Islam through successful attacks on non-Muslim States or regions. _______________________________________________________________ The role of Islamic armies was just to free the will of oppressed people and to leave them to select or maintain the faith that they believe in freely. Islam spread mainly due to its logic beliefs, authenticity of Quran, good morals, and honesty. refer to questions below for more details.
Trade and War
PERSIA
No, China got medicine from the Muslim empire during the golden ages of Islam (800-1200) when the Muslim empire spread to China.
Science and technology spread faster in the Muslim world than in the Christian world during the Middle Ages because the Arabs learned much from the cultures that they conquered.
In 732, the Franks halt to further Muslim advance into Europe
it started in Ancient Tamil country and began to spread to the North during the late medieval ages when North India was under Muslim rule.
With the spread of colonialism European governments strengthened their armies and navies in order to maintain the status quo
Islamic Armies were to defend Islam and Muslims, to give people free will, and remove the oppressions imposed on them. Islam was nor spread by war and armies. It is a misconception that Islam was spread by the sword. Armies were formed to protect and defend the Muslims when they were being attacked and persecuted. The majority Muslims are in countries never invaded by Muslims as in Indonesia, Malaysia, west Africa, China, and other countries.
black death Plague was spread via silk road. Mongol armies also spread it.
Non hygienic conditions allowed it. Also black rats and Mongol armies spread it.
Muhammad.