5.
Number five was probably the biggest social invention of the 21st century who has in the present the most reliable database in the world.
It’s called Facebook and was invented by Mark Zuckerberg in 2004 when he taught that his college mates have the need for a platform where they could all know each other and communicate.
A couple of years later the social network platform became a must have with over a billion users, with companies and public people endorsing themselves here.
With huge money made from advertising the platform gives you the opportunity to talk to anyone, anywhere while you could see what he is doing, where he was and what is he thinking at that moment, becoming the number one site for socializing.
