21. Through his conquests, he was responsible for laying the groundwork for the Hittite empire that was to come. 22. Kizzuwatna rebelled during the reign of Suppiluliuma I, but remained within the Hittite empire for two hundred years. 23. After the end of the Hittite empire in the early 12th century BC a new state emerged in Ishuwa. 24. Kizzuwatna in southern Anatolia controlled the region separating the Hittite Empire from Syria, thereby greatly affecting trade routes. 25. Nazi-Maruttaa successor, Hittite empire , celebrated with a treaty, as a buffer to the ascendant Assyrians. 26. The Hittite Empire was destroyed by the Indo-European-speaking Phrygians and by the Semitic-speaking Aramaeans. 27. Much of the history of the Hittite Empire concerned war with the rival empires of Egypt, Assyria and the Mitanni. 28. By the end of the Hittite Empire , the Hittite language had become a written language of administration and diplomatic correspondence. 29. The first certain attestation of chariots in the Hittite empire dates to the late 17th century BCE ( Hattusili I ). 30. After the end of the Hittite empire , the city became the center of the Neo-Hittite state of Kammanu.
