In which country did blondies originate, according to Wikipedia?

According to Wikipedia, blondies originated in the United States.

Blondies are American dessert bars that developed alongside the early history of brownies. They are based on brown sugar and vanilla rather than chocolate, producing a lighter-colored bar with a buttery, caramel-like flavor. Modern recipes often include nuts, chocolate chips or butterscotch pieces, but those additions are not essential to the basic style.

The history is more complicated than the name suggests. In the late nineteenth century, the word “brownie” could describe a range of small, dense baked sweets, including molasses-based versions without chocolate. Fannie Farmer’s 1896 recipe is often cited as an early general brownie recipe, and it was based on molasses. As chocolate brownies became widespread in the United States during the early 1900s, the older light version was distinguished as a “blonde brownie.”

That term eventually became “blondie.” The dessert’s origin is therefore American even though it has become common in bakeries and home kitchens around the world. Australia, Canada and the United Kingdom all have their own baking traditions, but they are not the origin identified by the cited reference.