Islam is a perfect religion

Islam is a perfect religion, and it is perfect, even all Muslims are convinced of perfection in Islam, what is perfection of Islam?
Islam is the only one that governs human life thoroughly through the guidance of the Quran conveyed by a last prophet of the Prophet Muhammad, Islam regulates the way of human life wherever, with anyone and under any circumstances,

1. Islam regulates human relationships with itself, (maintaining health, hygiene etc.)
2. Islam regulates human relationships with other living things (animals, plants and nature)
3. Islam regulates human relationships with the supernatural (believing in god, believing in other unseen things)
4. Islam regulates human relationships (politics, etc.)