The rapid expansion of the Rus' to the south led to conflict and volatile relationships with the Khazars and other neighbors on the Pontic steppe. The Khazars dominated the Black Sea steppe during the 8th century, trading and frequently allying with the Byzantine Empire against Persians and Arabs. In the late 8th century, the collapse of the Göktürk Khaganate led the Magyars and the Pechenegs, Ugric and Turkic peoples from Central Asia, to migrate west into the steppe region, leading to military conflict, disruption of trade, and instability within the Khazar Khaganate. The Rus' and Slavs had earlier allied with the Khazars against Arab raids on the Caucasus, but they increasingly worked against them to secure control of the trade routes.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who were common enimies to both the Khazars and Byzantine Empire?
Ah, so.. Persians and Arabs

Commensalism describes a relationship between two living organisms where one benefits and the other is not significantly harmed or helped. It is derived from the English word commensal used of human social interaction. The word derives from the medieval Latin word, formed from com- and mensa, meaning "sharing a table".
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Commensalism explains a relationship between how many organisms when one gains most of the benefits?
Ah, so.. unanswerable

Galicia (English i/ɡəˈlɪsiə/, /ɡəˈlɪʃə/; Galician: [ɡaˈliθja] ( listen), [ħaˈliθja], or [ħaˈlisja]; Spanish: [ɡaˈliθja]; Galician and Portuguese: Galiza, [ɡaˈliθa] ( listen), [ħaˈliθa] or [ħaˈlisa]) is an autonomous community of Spain and historic nationality under Spanish law. Located in the North-West of the Iberian Peninsula, it comprises the provinces of A Coruña, Lugo, Ourense and Pontevedra, being bordered by Portugal to the south, the Spanish autonomous communities of Castile and León and Asturias to the east, and the Atlantic Ocean to the west and the north. It had a population of 2,765,940 in 2013 and has a total area of 29,574 km2 (11,419 sq mi). Galicia has over 1,660 km (1,030 mi) of coastline, including its offshore islands and islets, among them Cíes Islands, Ons, Sálvora, Cortegada, and—the largest and most populated—A Illa de Arousa.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which country is Galicia in?
Ah, so..
Spain