Abraham was im.bortant because Abraham was the first Hebrew patriarch and is revered in Judaism, Christianity, and Islam. According to the Bible, he was called by God to journey to a new land, where he founded a new nation.
The Hebrews left Mesoptamia because According to the biblical book of Genesis, Abraham left Ur, in Mesopotamia, because God called him to found a new nation in an undesignated land that he later learned was Canaan. He obeyed unquestioningly the commands of God, from whom he received repeated promises and a covenant that his “seed” would inherit the land.
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