My best guest would be albany plan union
The rhythm of early notated music came from: the notation. Option letter B is correct since it made the music change the whole world. Many music notes were changed and added due to the evolution of music and its accompaniment.
Well we know that it is not A or C, Reason: Some states have up to 5m people in it. (For example about 8 live in just new York alone.)
And we also know its not 10 billion. Reason for this: Scientist have proven that there is no more then 8 billion people today.
And so now we got 6.5 billion is the closest, the real number is about 7.5 billion.
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