Final answer:
Muhammad's teachings in Mecca largely appealed to the young and immigrants, challenging the established polytheistic traditions and offering a sense of social responsibility and unity under Islam.
Step-by-step explanation:
The teachings of Muhammad had a significant impact on the people of Mecca, particularly young people and immigrants. His message calling for the belief in a single deity, Allah, challenged the polytheistic traditions of Meccan society. This demand for religious exclusivity threatened the existing power structure and the economic benefits gained from pilgrimages to Mecca's many idols and temples. Despite initial resistance from Mecca's elite, Muhammad's message began to resonate with those who were disenfranchised or looking for a sense of unity and purpose, ultimately leading to a significant following among the youth and immigrants in the city.
Through his teachings, Muhammad united diverse Arab groups under one religion, with the Quran in Arabic fostering a shared language and identity. The Islamic faith offered a sense of social responsibility and community, or ummah, which was particularly appealing to immigrants seeking a place in society. Muhammad's eventual return to Mecca and the destruction of the idols there marked the consolidation of Islamic belief and the transformation of Mecca into the holiest city in Islam, a unifying force for his followers.