Answer:
bought war bonds and invested in ammunition plants.
Step-by-step explanation:
Georgians motivated by these posters most likely "bought war bonds and invested in ammunition plants."
This is evident when considering the attached posters which were just some of them, the fact that the posters are intended to let the Americans keep funding the war through the trade of liberty bonds.
Hence, the posters imply that buying liberty bonds will prevent the Germans from overrunning the United States of America.