The correct answer to this open question is the following.
Although you did not include options and did not mention the period in Georgia history, we can comment on the following.
Two important railroad cargo industry in the state of Georgia are CSX company and Norfolk Southern. The first one is the result of two previous companies: Seaboard and ACL. The second one was the result of Central Georgia and the Southern Railway. By the 1920s, the Georgia railroad system covered most parts of the state, facilitating the transportation of goods and people all over Georgia, increasing trade in the region and to other states. But when cars became more popular, the passengers of railroads diminished.