In the first half of the 11th century, Hai Gaon refers to questions that had been addressed to him from Ashkenaz, by which he undoubtedly means Germany. Rashi in the latter half of the 11th century refers to both the language of Ashkenaz and the country of Ashkenaz. During the 12th century, the word appears quite frequently. In the Mahzor Vitry, the kingdom of Ashkenaz is referred to chiefly in regard to the ritual of the synagogue there, but occasionally also with regard to certain other observances.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When did Hai Gaon refer to questions that had been addressed to him from Ashkenaz?
Ah, so.. the first half of the 11th century

Lossless data compression algorithms usually exploit statistical redundancy to represent data without losing any information, so that the process is reversible. Lossless compression is possible because most real-world data exhibits statistical redundancy. For example, an image may have areas of colour that do not change over several pixels; instead of coding "red pixel, red pixel, ..." the data may be encoded as "279 red pixels". This is a basic example of run-length encoding; there are many schemes to reduce file size by eliminating redundancy.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What represents statistical redundancy?
Ah, so.. Lossless compression

After the rupture of the wars with Portugal and Catalonia, the Junta changed its attitude, this time due to the exhaustion of Galicia, now involved not just in naval or oversea operations, but also in an exhausting war with the Portuguese, war which produced thousands of casualties and refugees and was heavily disturbing to the local economy and commerce. So, in the second half of the 17th century the Junta frequently denied or considerably reduced the initial petitions of the monarch, and though the tension didn't rise to the levels experienced in Portugal or Catalonia, there were frequent urban mutinies and some voices even asked for the secession of the Kingdom of Galicia.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In what way was the tension between the monarch and Galicia similar to the wars it was fighting?
Ah, so..
there were frequent urban mutinies