Какое из изобретений, упомянутых какое из изобретений, упомянутых ниже, Вы рассматриваете самым важным для человечества?

Inventing the Internet

I think that inventing the Internet is very important for humankind. Without Internet I would have never known about a lot of things. First of all Internet helps people to learn English without teacher`s and without native speaker`s help. At the other hand it helps students during their study in the university.