So listen I’m sorry but I need to answer two questions for me to get mine answer so I don’t know what your question is and I’m not reading all of dat rn.
A) is a run-on because it could be broken up into two complete sentences, but there is no punctuation indicating that there are two separate thoughts. :)
Answer:
crew is a singular noun , eg ; the people she invited were a pretty motley crew
Answer:
to a great extent; extremely.
The answer is that because history is not all about who took an boat or ship it is all about how black people who had made most of what we have now is man made because black some white people there you go