With its original sound created from a variety of musical styles, jazz became a cause of new divisions between white and black americans a symbol of american domination of the post-world war i world a demonstration of the depth and richness of african american culture mainly associated with white musicians in the northern united states

The correct answer would be alternative B) "With its original sound created from a variety of musical styles, jazz became a symbol of american domination of the post-world war I"

It originated from African-American Communities in New Orleans, and had its roots in blues and ragtime. It's considered by many historians to be one the most original art forms to ever come from America.

the answer is a) high entry costs

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.