We know that the ruling elite and many other people of the Khazars have converted to Rabbinic Judaism. What happened to these people after the fall of the Khazar state? Why did they disappear?
9Hi z53 and welcome to History SE. There is a Wikipedia article on the Khazars en.wikipedia.org/wiki/…, including sections on their decline and dispersion. What is it you want to know which is not in this article?– Lars BosteenMar 7, 2018 at 7:35
There have been many people who converted to Rabbinic Judaism. What happened with them all? Why did they disappear?– z53Mar 7, 2018 at 10:37
1Did some of them blend into other Jewish populations, and lose their specifically Khazar identity? I believe the late and controversial Arthur Koestler, although not otherwise an expert in this field, wrote a book years ago arguing that many Jews are descended from Khazars. Do DNA studies of modern Jewish populations suggest significant likely ancestry from the area of the historical Khazars in addition to the Middle East? I don't actually know, hence offer this as a comment not an answer.– TimothyMar 7, 2018 at 14:06
1@Timothy - I believe I answered that question in my answer to the question the previous commenter linked.– T.E.D. ♦Mar 7, 2018 at 16:21
1You would benefit from making the title more reflective of the question. You may get closed for being unclear. If you want to focus on Judaism, you should specify that.– John DeeMar 8, 2018 at 2:09
Khazaria was multi ethnic state whose focus to facilitate international commerce through transcaucasus and the Pontic steppe region. Its core was composed primarily of a Turkic, or Turco-Iranian, and Slavic component. The Slavs remained in the region and became considerable part of the Rus. Khazaria also ruled over numerous other subject peoples, mostly Turkic. The decline of Khazaria was a tumultuous time in the entire steppe, as waves of Oghuz and Pecheng turks continuously pressed west and displaced others. The successors to the Khazars became the Rus in the west, and the Pechengs in the east. As mentioned, the Rus had absorbed the slavic component of Khazaria, the Pechengs were altogether new invaders, but also Turkic.
The decline of Khazaria began around 830. There was a civil war around this time that was started by a group called the Qabars, which means rebel in Old Turkic. The Qabars were defeated, and joined the Hungarians in their settlement of Hungary. Also around this time, the Rus Khaganate was formed to the Northwest. Exactly why they had a Khagan, and the extent to which it was influenced by Khazaria, is disputed.
Seljuk began his career as an officer in the Khazar army. The names of his sons suggests he was a Khazar Jew. He adopted his grandon Tugril, who founded the Seljuk Empire.