I will give thanks and 5 stars to whoever answers this question

The boll weevil infestation of the cotton fields in the late 1910s had a dramatic impact on Georgia’s cotton production. The infestation was one of the reasons for which major event?

A.
The “Great Migration” of sharecroppers
B.
The new cotton expositions in Atlanta
C.
The Atlanta race riot of 1906
D.
The Civil Rights Movement