<span>Since everyone was scared of communism, Hollywood started making blacklists of people who weren't allowed to participate in movie making because it was feared that they would use the movies as a medium for spreading their ideological beliefs. Many actors and directors had their career's ruined because of this.</span>
Well, this really depends on the word or words that are italicized. However, I did find somewhere on the Internet that the italicized words are <em>before the concert was over.
</em>If that is the case, then the correct answer is adverbial clause, given that it functions as a simple adverb, that is, it answers the question - when did something happen?
<em />When did we leave the auditorium? - Before the concert was over.
I think its an alliteration
