Who was managing editor for the Atlanta journal and promoted the concept of the new south

Henry Grady

Explanation:

Henry Grady (1850-1889), born in Athens, GA, is best known for his continual promotion of the “New South.”

i also think it is c

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.