Traveling to and from cities became easier. (I think thats correct)
Answer:
Like other Muslims, the Shi´ites believe in the unity of God (Allah is the only God) and His divine guidance through God´s Messenger , the Prophet Muhammad. But they maintain that for the moral and spiritual leadership of the ummah (community of believers), Allah instructed the Prophet to appoint Imam Ali, a figure of authority (actually he was Muhammad´s cousin and son-in-law), to succeed him as leader of all Muslims. This tenet is not accepted by Sunni Muslims, the majority in Islam. Shi´ia is predominant in Iran and Iraq.
Explanation: