Just consider what we know about just one ancient city in Mesopotamia, Ur of the Chaldeans the city where Abram’s (Abraham’s) brother Haran (and likely Abraham himself) was born. see (Ge 11:28; Ac 7:2, 4). I will cite the scriptures here so that you can locate this information in your own Bible. Jehovah God appeared to Abraham and directed him to leave Ur. The Bible, crediting Terah with the move because he was the family head, says that Terah took his son Abraham, his daughter-in-law Sarah, and his grandson Lot, moving from Ur to Haran. In royal tombs at Ur, excavators have found many objects of gold, silver, lapis lazuli, and other costly materials, as well as indications that early Sumerian kings and queens of the city were buried with their retinue of male and female servants. Ruins of what appear to be private houses excavated at Ur (suggested by some as belonging to the period between the 20th and 16th centuries B.C.E.) show that they were constructed of brick, were plastered and whitewashed, and had 13 or 14 rooms surrounding a paved courtyard. Among clay tablets found at the site were some used to teach cuneiform writing. Other tablets indicate that students there had multiplication and division tables and worked at square and cube roots. Many of the tablets are business documents. from 1922 to 1934, British archaeologist Sir Leonard Woolley not only confirmed this identification but also discovered that the Ur left by Abraham was a flourishing and highly civilized city with comfortable houses and a huge temple tower, or ziggurat, dedicated to the worship of the moon god Nanna, or Sin. Historians had long expressed doubts about the city of Ur mentioned in the Bible in connection with Abraham. But the archaeologist’s spade proved the Bible to be true. Archaeologists have also confirmed many customs referred to in the Bible account concerning Abraham. For example, at Nuzu, or Nuzi, an ancient Hurrian city southeast of Nineveh, clay tablets have been found that authenticate such customs as these: Slaves becoming heirs to childless parents (compare Abraham’s remarks about his slave Eliezer (Genesis 15:1-4); a barren wife’s being obligated to provide her husband with a concubine (Sarah, or Sarai, gave Hagar to Abraham, (Genesis 16:1, 2) and business transactions taking place at the gate of a city (Compare Abraham’s purchase of the field and cave of Machpelah, near Hebron) see Genesis 23:1-20. Source: scriptures cited and "Insight in the Scriptures" Volume II, Watchtower Bible and Tract Society". Also Watchtower Magazine, 1980 10/1 pages 5-9