McDonald's introduced the Happy Meal as a permanent United States menu item in 1979.
The children's meal combined a small serving of food with a toy and distinctive packaging. Its concept grew from regional children's meal promotions and was developed into a national product by McDonald's marketing team.
The branding was important because the package itself became part of the experience. The Happy Meal connected McDonald's restaurant identity with McDonaldland characters, collectible toys, and family-oriented promotions. Its name and box design helped turn a meal into a recognizable sub-brand.
The Happy Meal is sometimes dated to 1977 because test versions appeared in selected markets before the national launch. The nationally established product date is 1979. The toy, packaging, and menu contents have changed repeatedly, while the core branded format has remained recognizable.