What canadien was known as America's sweetheart?

The Canadian known as "America's Sweetheart" is Mary Pickford. She was a prominent actress and co-founder of United Artists, and her popularity in the early 20th century made her a beloved figure in American cinema. Pickford was known for her charming performances and was one of the first major movie stars, earning her the affectionate title due to her wholesome image and widespread appeal.