The musical form of structure that uses a counter melody is : Minuet and Trio
Counter melody is a sequence of notes , perceived as a melody , written to be played simultaneously with a more prominent lead melody
well the opening of gates in the Wall was met with euphoria across both Germanies. East Berliners were greeted with glasses of champagne as they crossed the border, many of them for the first time in their lives. Strangers embraced in excitement, overwhelmed by the enormity of what they were witnessing. The party atmosphere reigned all night in downtown Berlin.
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B:American contributions to the columbian exchange