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.
Except for Antarctica (to the best of my knowledge), every country has Muslims living there.
Muslims are almost like in every country and nationality. There is no such thing as the Muslim Country.
Muslims can worship in any country, there are no rules about this.
Indonesia with 204,847,000 Muslims
The biggest country in the universe which has a population of muslims is Saudia Arabia and Pakistan.
Indonesia has over 100 Muslims. In fact, nearly non-Muslim country has well over 100 Muslims.
Every country in Europe has Muslims in it.
Indonesia (~210 million Muslims)
Indonesia has the greatest number of Muslims.
The country with the largest percentage of Muslims in their population is Morocco with 99.9%. The country with the most Muslims is Indonesia with 204,847,000.
Bosnia and Herzegovina (a country in ex-Yugoslavia) is the region were Muslims are
No.