As you'll see when you read about these 10 world-changing inventions, no invention is created in a vacuum. Every single one was built on previous inventions created by other inventors years, decades or even centuries before.
Here is the list of the natural calamities and disasters that will go down as the worst disasters in human history for the amount of death and destruction they have caused.
For those who think that necessity is the mother of all inventions, think again. You would be amazed to know how most of the major inventions were born out of pure accidents - from the snacks you eat to the things you use in your mundane, daily life.