Most significant inventions don't have just one inventor. Instead, they have been developed separately by many people, or many people have had a hand in their evolution from basic concepts to valuable inventions. Here is a list of our top picks of revolutionary inventions that changed the world: 1. The invention of the wheel was a big deal The wheel was a major innovation. LordRunar/iStock The wheel is an original engineering marvel and one of the most famous inventions. This basic technology not only made it easier to travel but also served as the foundation for a vast number of...