The U-boat attacks on Georgia. What did georgia have the greatest impact on?

Georgia's economic and social structure have received greatest impact through U-boat attacks.

Explanation:

During world war I all the participant countries were in war through air, water and land. Unexpected sinking cause deterioration in the relation between two countries like sinking of Lusitania creates problem in between United States and Germany.

Likewise sudden attack of ships on countries naval force also create problem. The U-boat attacks left an significant impact on Georgia's social and economic structure. German U-boat is the cause of sinking of Lusitania. It was built for both passenger and cargo service.