1. Jell-O took off in the 1900's due to clever marketing
2. They gave immigrants Jell-O molds
3. As Jell-O increased in popularity, so too did a desire for gelatin salads and so Jell-O began making savoryversions in celery, seasoned tomato, and mixed vegetable flavors. 4. Jell-O can be used as hair dye 5. The horses in the wizard of oz got their color from Jell-O Thanks for reading please sub!