1. It resulted in a huge shock in the community fallowed by an election of Abu-Bakr as the leader of the state
2. Historically, getting support from locals and having a strong belie and high morale allowed them to defeat the empires.
3. Islam spread via missionary spread Islam in the empire. Islam had a very simple message and could be accepted universally, so it was appealing to many.
4. he allowed the Muslim state to continue operating, taking the position as the Calif
5. They encouraged conversion but where tolerant so long as a toll tax was payed and peace was maintained.