Which famous Great Depression-era advertising slogan was created to encourage spending during economic hardship and later became a permanent fixture in American consumer culture?

Throughout history, certain brand slogans have become so iconic that they've transcended their original marketing purposes and become cultural touchstones. These slogans often reflect the values, aspirations, and challenges of their eras. This trivia question tests your knowledge about one of the most influential historical brand slogans that helped shape consumer behavior during a critical period in American history.

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"A Diamond is Forever" (De Beers)
"When you're out of Schlitz, you're out of beer" (Schlitz)
"Buy Now, Pay Later" (Department stores' installment plans)
"Good to the Last Drop" (Maxwell House)