Oil A a If people hadn't discovered disc If that lot of sources of oil, cars mill run on gasoline wouldn't have become so common. from The first commercial oil well wid drilled in North America was in Oil Springs, Ontario, 194 Canada in 1858. Computers If we didn't have computers, a lot of work would still be done with paper and pencil, and people in their homes wouldn't be able to be in contact with the entire world. The first PC was introduced by IBM in 1981.