Which packaging innovation, patented in 1810, was originally developed for Napoleon's armies but went on to revolutionize food preservation worldwide?

Throughout history, packaging innovations have revolutionized how we preserve and transport food. Some inventions were so groundbreaking that they fundamentally changed society's relationship with food storage and consumption. This trivia question focuses on a pivotal packaging innovation from the early 19th century that transformed food preservation methods and had lasting impacts on global trade, military logistics, and everyday food consumption patterns.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Tin canning process (appertisation)
Cellophane wrapping
Vacuum-sealed glass jars
Waxed cardboard containers