because he didnt teach them how to choose one upon his death?
As the charge of any ruler of any country.
Most of Arabia was under Muslim rule at time of Death of Prophet Muhammad saw .
After much dispute following the death of Prophet Muhammad in 632 CE, Abu Bakr was chosen as the first caliph. His selection was largely supported by a faction of the Muslim community, particularly those close to Muhammad. Abu Bakr's leadership helped to unify the Muslim community and laid the foundation for the expansion of the Islamic state. His caliphate lasted until his death in 634 CE.
Medina.
Yes. After Muhammad's death, Muslim scholars drew up the Shariah (or Sharia), a law code that provides believers with a set of practical laws to regulate their daily lives.
Muhajreen took control of Muslim empire after the death of Prophet (pbuh)
Shiites broke away from the Muslim community primarily due to a dispute over the rightful leadership of the Muslim community after the death of the Prophet Muhammad in 632 CE. They believed that leadership should remain within the Prophet's family, specifically with Ali, his cousin and son-in-law, while the majority Sunni community supported the selection of leaders through consensus. This disagreement over succession and authority led to the formation of distinct religious identities and practices, contributing to the lasting Sunni-Shiite split in Islam.
No, because Islam was founded after the death of Christ.
by the time of his death in 632 muhammad had undifed much of the arabian pensula under islam
Abu Bakr was the first Khalifah (leader) after Muhammad
The four Caliphs who ruled after prophet Muhammad death came to power through election. The election system was that the group of Muslim leaders (who are recognized with their sincerity and devotion to Islam and Muslims) select one and then the people agree on him by what is called "Mobai'a". If accepted by the majority, then he be the Caliph and all Muslims, who agreed and who didn't, will be supporting him.
They follow the religion of Islam per God revelation of Qur'an to prophet Muhammad (PBUH) through the angel Gabriel (Jibril) in year 610 AD through year 632 AD (date of prophet Muhammad death).