Saudi Arabia in the city called Mecca.
Islam faith has begun by start of universe creation. refer to question below. However, Islam per Quran revelation by God to prophet Muhammad (PBUH) has begun in Makkah (or Mecca) and Medina in the current country known by Kingdom of Saudi Arabia
Islām begun when Allah created Ādam عليه السلام
The full name is Islam. It is a monotheistic and Abrahamic religion, articulated by the Qur'an and practised by Muslims. It is a relatively new religion, having begun in 610CE, however there are no other names associated with it.
Islam faith had begun by start of universe creation. Refer to question below. However, Islam faith per Quran revelation to prophet Muhammad started in Makkah (or Mecca) in the current country of the Kingdom of Saudi Arabia in Asia
You are thinking of Sufism. It is minor in the sense of having fewer members than other varieties of Islam such as Sunni Islam or Shiite Islam, but no doubt its members do not consider it to be a minor religion. Every religion is the most important religion in the world, to those who believe in it.
The correct phrase is "I have begun." "Begun" is the past participle form of "begin."
Begun is correct.
"I have not yet begun to fight!"
I/you/we/they have begun. He/she/it has begun.
The population of Begun is 19,333.
Prophet Muhammad; peace be upon him; had begun calling for Islam per God command to and per Quran God revelation to him through the angel Gabriel (or Jibril). Refer to question below.