The word to be used that best completes the statement would be "had been having." The word is considered at a past perfect continuous state. This state of the verb should be used when indicating an action that was continuously done in the past. Simply and the progressive tense of the verb by "had been."
After reading through the "American Indian Civil Rights”, the sentence that best describes the conflict the author develops in the text is: "Most experts agree that is was over ten thousand years ago, well before European settlers began exploring this region of the world."
Sound effects were originally created and recorded for Horror movies to give a more dramatic feel that will start to grab you attention for plays sound affects were mostly used to make the audience more interested in to what they were watching, Most sound affects now are mostly music especially in action movies or car racing movies to make it even more dramatic than it already it is can you imagine a movie or play without sound affects or movies it's pretty weird and in the early 1900 before there was no audio in movies "Silent films" they used sound affects and music so they won't bore the audience.
