Around 15% of Muslims in the Middle East are Shiites.
Muslims currently live all around the world, not just in the middle east
Middle East
Yes, for Islam originated in the Middle East, along with Judaism and Christianity.
Most Middle Easterners are Arab Muslims, but there are significant populations of non-Arabs in the Middle East and significant populations of non-Muslims as well.
This question as composed is incomplete. You have to say more than where? For example, there are fewer Muslims in the Middle East alone than the Indian Subcontinent (Pakistan, India, and Bangladesh). However, there are more Muslims in the Middle East than in Iceland.
Muslims don't have a 'home country'. They are spread about the world, but mostly they live in the Middle East or Northern Africa. Jerusalem and Mecca are cities that hold some importance to their religion.
Every city in the Middle East older than 70 years has been controlled at some point or another by Muslim leaders with a few very specific exceptions like Tel Aviv.
it was divided by disagreements over which muslims should be leaders
Currently, there are around 320 million Muslims in the Middle East, roughly 90% of the Middle East population.
They adopted the Islamic religion and ruled the Middle East for more than 400 years.
it promoted islam but tolerated the culture, religion, and science of the non-muslims