INDIAN HISTORY

Detailed explanation-1: -The Muslim conquest of Persia, also known as the Arab conquest of Iran, was carried out by the Rashidun Caliphate from 633 to 654 AD and led to the fall of the Sasanian Empire as well as the eventual decline of the Zoroastrian religion.

Detailed explanation-2: -From the mid-seventh century, Muslim Arab armies from Saudi Arabia began to travel north into Central Asia and west across Africa, invading the countries they passed. The Sasanian Empire, exhausted from many years of war with the Romans, was spectacularly defeated and Iran and Iraq were soon conquered.

Detailed explanation-3: -Muhammad-bin Qasim was the first Muslim invader of India. Muhammad-bin Qasim was an Umayyad general who at the age of 17 led the first Muslim conquest of the Indian peninsula. He conquered the Sindh till Multan from Raja Dahir along the Indus River.

Detailed explanation-4: -Ghazan Khan converted the dynasty to Islam. Their center of rule was in Azerbaijan, the northwestern province, which had seldom played an important role in earlier Iranian history. Eastern Iran, which had flourished in the earlier Islamic centuries, never fully recovered economically or regained political importance.