During the period when we obtain glimpses of the history of the Hittites, they were never united in one empire. Different kingdoms flourished here and there, such as that of the Mitanni in Mesopotamia, the Hittites at Boghaz Koi, the kingdoms of Carchemish, of Hamath, and Tyana. These flourished at different times all the way from 1400 to 700 B. C., and there were doubtless other kingdoms also, for the Hittite sculptures near Smyrna and Manissia cannot have been made by any of these, unless possibly the great Hittite kingdom at Boghaz Koi may once have extended its power to the Ægean. (3) _The Mitanni._--The earliest of these kingdoms which we can trace is that of the Mitanni. When Thothmes III of Egypt extended his conquests to the Euphrates in 1468 B. C., he came into contact with the Mitanni. The king of the country is not named, but it was claimed that her chiefs hid themselves in caves.[26] There is some reason for believing that their chief city was at Haran[27] in Mesopotamia, the city where Abraham sojourned for a time (Gen. 11:31; 12:4). If this be true, it gives a new meaning to Ezek. 16:3: “The Amorite was thy father and thy mother was a Hittite.” Thothmes evidently touched the kingdom of Mitanni on its western border. He did not penetrate its heart or overcome its king. Although he took tribute, he does not tell us the name of the king of the Mitanni whose armies he fought. Half a century later the king of the Mitanni was Artatama I. He was a contemporary of Thothmes IV of Egypt, who ruled 1420-1411 B. C. Perhaps it was their mutual fear of the rising power of the Hittite kingdom at Boghaz Koi that led Artatama and Thothmes IV to form an alliance. At all events, such an alliance was made, and Thothmes married a daughter of Artatama, though Artatama’s grandson says that the Egyptian king sent his request for her hand seven times before Artatama yielded to his solicitations. Artatama I was succeeded by Shutarna I, whose reign overlapped a part of that of Amenophis III of Egypt, 1411-1375 B. C. Among the queens of Amenophis III was a daughter of Shutarna I. Before the reign of Amenophis III had ended Shutarna I had been succeeded by Dushratta, who continued the friendly relations with Egypt. Dushratta’s reign also overlapped in part that of Amenophis IV of Egypt, 1375-1357 B. C., and Dushratta wrote several letters to both of these Egyptian kings. It is from these letters that we gain most of our information about Mitanni.