What factors led to the rapid growth of islam following muhammad’s death, despite early internal conflicts between sunni and shia?

The Islamic state developed quite swiftly later the departure of Muhammad through exceptional accomplishments both at turning unbelievers to Islam and by aggressive triumphs of the Islamic community's litigants. Development of the Islamic republic was an expected growth since Muhammad himself had strongly built the new religion through conversion and victory of those who stood against him. Shortly after the Prophet's demise in 632, Abu Bakr, as the first Caliph, extended the struggle to destroy idolatry among the Arab tribes, and also to include Arabia into a territory dominated by the administrative authority of Medina. United by their belief in God and a dedication to an administrative alliance, the trader aristocracy of Arabia achieved in strengthening their power during the Arabian peninsula and started to originate some exploratory assaults north toward Syria.

an era of negotiation.

is that an answer to your question?

answer; i believe its (jade); good luck