In today's Arab society, about 95% Arabs believe in Islam, and the remaining 5% believe in Christianity, Judaism and Druze Islam. However, this has not been the case since ancient times. Before the establishment of Islam, Arabs were mostly primitive polytheists, and before the birth of Islam, the Arabian Peninsula was a tribal separatist era.

People don't have a unified concept of the Arab nation. In religious belief, tribe is the smallest unit to distinguish. Generally speaking, on the Arabian Peninsula at that time, the southern tribes worshipped the sun, the moon and the stars as totems, while the northern clan tribes worshipped plants and stones as totems.

However, influenced by Judaism and Christianity, a few Arabs began to believe in these religions.

The spread and development of Islam;

The development of Islam from the religion of a single nation in the Arab region to the religion of multi-ethnic beliefs in the world is the result of the extensive spread of Arab Islamic countries through various channels such as continuous external expansion, commercial exchanges, cultural exchanges and sending missionaries to all parts of the world. After Muhammad's death, Islam entered the four caliphs.

With the foreign conquest of the unified Arab countries, Islam spread widely outside the peninsula. It is called the pioneering period of Islam. From 66 1, Islam entered the Arab Empire. After Umayyad Dynasty and Abasi Dynasty, Islam became the dominant religion in the empire, spanning three continents: Asia, Africa and Europe.

/kloc-In the middle of the 0/3rd century, with the invasion of foreign countries, many places in the east and west of the empire became independent and the Arab Empire disintegrated. In the late Middle Ages, the Islamic world stood side by side with three empires: Ottoman, Safavi and Mughal, among which the Ottoman Empire had the greatest territory and influence.