Which of the following were early causes of population shift in Georgia? The election of William Hartsfield
The boll weevil and Agricultural Adjustment Act
The governor race of 1946
The bombing of Pearl Harbor in 1941

Aight, I am so so so sorry if I get this wrong, normally I wouldn't answer a question I'm not 100% confident about, but it seems like nobody else is gonna answer s

William Hartsfield was the 49th and 51st mayor of Atlanta, Georgia. He served six terms, longer than any other person in the city's history. He is credited with developing Atlanta into an aviation powerhouse and with building its image as "A City Too Busy to Hate".

The boll weevil, introduced to the state in 1915, greatly reduced state cotton yields. Georgia's cotton acreage declined from 5.2 million acres in 1914 to 2.6 million in 1923. Overproduction in other parts of the country and foreign competition increased the supply of cotton and decreased the price.

The three governors controversy (governor race of 1946)  was a political crisis. Three men made claims to the governorship: Ellis Arnall, the outgoing governor, Melvin E. Thompson, the lieutenant governor-elect, and Herman Talmadge, Eugene Talmadge's son.

Though I'm sure you know this one, Pearl Harbor was a surprise aerial attack on the U.S. naval base at Pearl Harbor on Oahu Island, Hawaii, by the Japanese that precipitated the entry of the United States into World War II.

In conclusion, I'ma take a wild guess and say that the boll weevil and the bombing of pearl harbor seem like the most likely answers.  

Really hope this helps!