Final answer:
Muhammad faced resistance when he tried to preach his revelations, particularly in Mecca. However, he found more success in Medina and eventually united Arab tribes under his leadership.
Step-by-step explanation:
Muhammad faced challenges and resistance when he tried to preach his revelations. In Mecca, where he initially preached, the polytheistic society and the powerful clan leaders were resistant to his message of monotheism, as it threatened their religious practices and financial interests. Muhammad's preaching of exclusivity and the rejection of traditional beliefs contributed to the fierce resistance he faced.
In contrast, Muhammad found more success in Medina, where he established a religious community and gained political and religious authority. He led a Muslim force against Meccan armies and eventually conquered Mecca, making it the center of Islam. By the time of his death, Muhammad had successfully united most of the Arab tribes under his leadership and converted them to Islam.
Overall, Muhammad's attempts to preach his revelations were met with initial resistance in Mecca but eventually led to the establishment and expansion of the Islamic religion.