Which innovative advertising technique for selling war bonds during WWII is credited with raising over $185 billion and is considered one of the most successful government marketing campaigns in history?

During World War II, governments needed unprecedented funding to sustain their war efforts. This led to one of history's most successful marketing and customer loyalty campaigns: war bonds. These financial instruments not only raised critical funds but created a sense of civilian participation in the war effort. This trivia question explores how military history and marketing innovation intersected during this pivotal historical period.

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War Bond Drives featuring Hollywood celebrities
Rationing Rebate Program that offered bonds in exchange for unused ration stamps
Victory Garden Vouchers that provided bonds for agricultural contributions
Allied Forces Lottery that randomly awarded bonds to citizens with winning ticket numbers