The answers to your question is,
1.Islam drew on an older Arab identification of Allah with Yahweh, the Jewish High God, and Arab self-identification as children of Abraham.
2.The Quran denounced the prevailing social practices of an increasingly prosperous Mecca and sought a return to the older values of Arab tribal life, like the sharing of goods ammongst tribes.
3.The message of the Quran also rejected the Arab tribal and clan structure, which was prone to war, feuding, and violence. Instead, the Quran sought to replace this structure with the umma, the community of all believers.
-Mabel <3
