Some muslims decided to follow the umayyad's(Sunnis) while others decided not to(Shi'a).
Issues of choosing leaders divided Muslims primarily during the early years of Islam, following the death of Prophet Muhammad. One faction believed that leadership should be based on a lineage connection to the Prophet, giving rise to the concept of caliphate. Another faction believed that leadership should be based on the consensus of the community, leading to the development of the concept of Imamate or religious authority. These divisions resulted in the formation of different sects within Islam, such as Sunni and Shia.
The suffrage groups did fight so hard to vote in the 1920s because they wanted representation. By choosing their own leaders their issues would be addressed.
cause Muslims live on Earth just as you do.
It convinced leaders not to make laws addressing issues such as child labor and pollution.
What divided the Muslims cristians and Jews
It depends on the particular Muslims, when they left, and the particular countries that they departed from. It could be anything from: religious intolerance, economic issues, family issues, missionizing/proselytizing/dawah, marriage, conquest, diplomacy, etc.
Leaders must understand the broader issues of conflict and their changing nature.
choosing a candidate
choosing a candidate
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free elections
Free elections
Muslims can find guidance on these issues in the same way as everyone else. Thought, conversation, good books, and philosophy can all lead any thinking person to the correct choices.