What was the impact of the new world on Europeans

Several diseases spread and infected a large segment of population.. with the arrival of white man as sailors into unexplored nations , disease became prevent.. This was because that these sailors where themselves infected from the disease.

the answer is c.

i hope this .

in the 1950s, country music came into its own before rock-n-roll took off in the 60s while jazz and classical music continued to innovate