Which innovative retail strategy did the U.S. government use to sell over $185 billion in war bonds during World War II?

During World War II, governments needed creative retail strategies to fund their war efforts. War bonds became one of the most successful retail products ever marketed to civilians, combining patriotism with consumer psychology. This poll tests your knowledge about how military organizations used innovative retail techniques and famous promotional campaigns to drive civilian participation in war funding efforts.

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The 'Buy a Bond, Meet a Star' campaign featuring Hollywood celebrities touring the country to promote bond sales at retail locations
The 'Victory Garden' program that gave a free war bond with purchase of gardening supplies at participating retailers
The 'Penny War' campaign that allowed children to exchange collected pennies for miniature war bonds at post offices
The 'Defense Stamp' loyalty program where customers earned stamps with retail purchases to redeem for war bonds