This sentence technically doesn't contain an error in verb-noun agreement, however the noun "each one" is odd here. It should be "everyone"
Correct me if I'm wrong but I think the answer is:
"They were white musicians and composers who were heavily influenced by jazz."
Hope this helps and God bless you!
Its location. the silkroad stretches from china to europe
His discovery of the Pacific Ocean established Spain's claim to it and the land surrounding it, and spurred Magellan to seek a direct sea route to the Pacific and the East Indies beyond.
“era” refers to a period of time characterized by events in a chronological order.
“Period” can refer to a short interval of time or a very long interval of time.
