Which controversial advertising technique was banned in the 1990s for military action figure toys in the US?

Throughout history, military artifacts, replicas, and memorabilia have become significant consumer products with dedicated collectors and enthusiasts. The marketing and retail strategies for these items have evolved dramatically over time, from small specialty shops to global online marketplaces. This poll tests your knowledge about the interesting intersection of military history and consumer product marketing.

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Direct combat simulation in TV commercials where toys appeared to kill enemy figures
Using actual war footage as background in commercials
Offering real ammunition samples as mail-in promotions
Celebrity military veteran endorsements in children's programming