The Innovation that has Most Transformed the World

Hello guys,

What innovation has most transformed the world?

I think farming certainly is one of the most important innovation. Agriculture is the base of our today's economy. Because of farming, most of the people don't need to look for food. Today, less than 2% of the total US population still live on farms, but they provide more than efficient food for the US. Farming made it possible that people could follow various careers. All thanks to farming, we can do whatever we want without worrying about starvation.