I want to know the answer to the following question:
Who identified Ashkenaz with the Saquliba or Slavic territories?
All the background I'm provided with is that "His contemporary Saadia Gaon identified Ashkenaz with the Saquliba or Slavic territories, and such usage covered also the lands of tribes neighboring the Slavs, and Eastern and Central Europe.". Is that enough to answer the question?
Answer: yes