What does and precisely because of the diversity of African peoples represented in America the culture that emerged was a uniquely new world creation mean?

Answer 1

The connection implied in your question is incomplete as regards "a uniquely New World creation", because, however broad their ethnic diversity, all Africans arriving in America encountered not only each other, but a wide range (indeed!) of other cultural influences, radically new forms of social organization and -as importantly- an entirely new physical environment. It is meaningless to attempt to dissect the 'melting pot' into this or that separate effect, if one wishes to explain the origination of a unique New World culture. That being said, you could rephrase the question, viz., "To what extent did the original ethnic diversity of Africans affect the evolution of New World culture?" Some astute historian might be able to take a stab at that one. Note: In these considerations, the term "New World" should certainly include America, Canada, and the entirety of the Caribbean region.