The status of Arabs before Islam revelation has no such thing as a sense of unity or nationalism, although all the people of the peninsula were Arabs. Each tribe was a separate and independent entity, with different dialects and religious beliefs and had no feeling of affinity or loyalty to any other except in terms of mutually beneficial and convenient alliances.
The golden period of the Arab history begins over 1000 years ago of the earth’s life. During this era, Arabs established great civilization, awesome empire. The sense of “the nation of Arabia” was achieved. Read more to Know about Arab History.