Dear earnit,
You missed the verb "made". As there are just two verbs "turned" and "made" and the single subject "political climate", you do not need a comma before the "and".
"Performed" is not used as a verb. The political climate made "something" impossible -- that "something" is the complex noun phrase, "his having the piece performed". In this noun phrase, "performed" is a participle
...
You missed the verb "made". As there are just two verbs "turned" and "made" and the single subject "political climate", you do not need a comma before the "and".
"Performed" is not used as a verb. The political climate made "something" impossible -- that "something" is the complex noun phrase, "his having the piece performed". In this noun phrase, "performed" is a participle
...
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