Which factor plays a major role in the rapid spread of infectious diseases?
a.
the use of untested medication
b.
the high cost of medication in tourist areas
c.
the large number of people traveling by air
d.
the lack of sufficient medical personnel in tourist areas

ell really, the setting was in franklin and lincoln visits franklin even after he moved to columbus, and he went to school

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.

answer(8,000.)