Complex sentence: In 1921 Wanda became a partner in a business venture called "Happiwork Story Boxes", boxes decorated with story panels in the sides, this business, along with several other ventures, failed.
Split into simpler sentences: In 1921 Wanda became a partner in a business venture called "Happiwork Story Boxes", boxes decorated with story panels in the sides. This business, along with several other ventures, failed.