How did Islam develop and change after the death of Muhammad?

After the death of Muhammad in 632 CE, Islam went through a significant period of transition and change. Here are some key developments:

1. The Caliphate: Muhammad's close companion, Abu Bakr, became the first caliph and established the system of caliphate. This marked the beginning of the leadership succession in Islam, with subsequent caliphs being chosen by a council or through inheritance.

2. Expansion and Conquests: The Rashidun Caliphs (Abu Bakr, Umar, Uthman, and Ali) led military campaigns to expand the Islamic empire. They successfully conquered territories in the Arabian Peninsula, Byzantine Empire, and Sassanian Empire, spreading Islam to new regions.

3. Compilation of the Quran: During the time of Uthman, the third caliph, the Quran was compiled into a standardized text. Uthman sent copies of the Quran to various Muslim regions to ensure uniformity and accuracy in recitation.

4. Sectarian divisions: Following the assassination of Ali, divisions within the Muslim community emerged. The majority Sunni sect believed that the caliph should be chosen by consensus, while a minority Shi'a sect believed that the caliph should be a descendant of Ali. These divisions led to political and theological disagreements that persist to this day.

5. The Umayyad Dynasty: In 661 CE, the Umayyad Dynasty took over the caliphate and shifted the capital from Medina to Damascus. This era marked a transition from the egalitarian ideals of early Islam to a more hierarchical and centralized form of governance.

6. The Abbasid Dynasty: In 750 CE, the Abbasids overthrew the Umayyads and established their own caliphate with Baghdad as the capital. The Abbasid period saw advancements in various fields such as science, philosophy, and arts, as well as the flourishing of Islamic culture.

7. Development of Islamic Law: In the centuries following Muhammad's death, Muslim scholars developed legal frameworks based on the Quran and Hadith (sayings and actions of Muhammad). These frameworks, known as Sharia, provided guidelines for personal conduct, governance, and social issues.

8. Spread of Islam: With the expansion of the Islamic empire, Islam spread to regions such as North Africa, Spain, Persia, Central Asia, and the Indian subcontinent. Arab traders and scholars played a crucial role in the transmission of Islamic teachings and culture to these regions.

Overall, the developments and changes in Islam after the death of Muhammad shaped the religion's theology, governance, and expansion, while also leading to divisions and diversification within the Muslim community.