This is a bit of a rumor as the truth isn’t known for sure, but supposedly sushi as we know it today also started in Canada. Rolled raw fish was a thing for a while, but putting rice on the outside may have started in Canada.

From Wikipedia: “Although the true origin is disputed, it’s widely believed that Chef Hidekazu invented the California roll (originally called “Tojo-maki”) in Vancouver, by inverting the roll and putting rice on the outside to make it more accessible to Western tastes, and adding non-traditional ingredients like avocado.”