Final answer:
The slogan 'Absolutely Pure' was used for Royal Baking Powder in the late 1800s, highlighting the purity and quality of the product during a time when food safety was a significant consumer concern.
Step-by-step explanation:
The slogan that was famously used for Royal Baking Powder in its advertising campaigns during the late 1800s was 'Absolutely Pure'. This slogan appealed to consumers' growing concerns about food safety and the adulteration of food products, which were prevalent at the time.
The notoriety of alumni like Friedrich Accum, who raised public awareness about food adulteration, helped create a market for products like Royal Baking Powder, which were advertised as wholesome and free of harmful additives.
During this period, companies realized the importance of slogans in branding and advertising. Slogan making became a specialized strategy to capture consumer trust and differentiate products in a rapidly expanding marketplace.
The catchy and reassuring slogan of 'Absolutely Pure' for Royal Baking Powder promised a high-quality and safe ingredient for cooking and baking, at a time when such assurances were crucial to successful marketing.