Genius seems to have telescoped two clues into one! 1 across reads: "Foremost of companies prospered; it's possibly why?" The answer to that is what I said earlier.
19 across reads: Sources of material for writers in Kyrgyzstan displaying internal resolve." The answer to that is 'ink bottles'.
I'm afraid I simply did not read the opening query in its entirety, for which I apologise. I spotted the opening words and went directly to the appropriate clue...as it seemed!
You are quite right quiz my computer was hanging up and i got the answer to 1 across while waiting for it to recover. Don't know how I managed to telescope the two clues into one.
My daughter certainly gave me the wrong name when she registered me as genius!!