Inventions tread:
Since we can see the country flag of users here it gave my an idea.

Post five things invented from natives of your country, whether it be a famous poem,book, inventions, military strategy or a discovery
Post photos if you want
Africans need not apply
I start

>1. Dracula
>2. Modern submarine
>3. ww1 tank
>4. Beaufort scale
>5. The splitting of the Atom