When was the abacus first made?
(1 votes)
Loading...Similar Posts
What is the difference between feudalism and estate society?
ByHaftea
Hello, I'm doing a bit of research on the Middle Ages out of interest, and there's no getting around the idea of the class system, or feudalism. I understand that feudalism is a form of government like capitalism, but how does it differ from the class system? It's important to me that this question be…
The Earth was once flat – where were the "limits"?
ByGringo58
Did one fall down "at the edge of the world"? Or was the "disc" infinitely limitless?
Did tanks and fighter aircraft play a major role in World War I?
Or was that rather secondary
Who wrote this letter?
Hello, I bought a whole lot of very old letters at auction and found signatures on some of them. One letter was signed by an "Ernst Hausmann." According to the translation of the letter (it's in Dutch), he was apparently a pastor at some Dutch parish. I haven't found anything about it online, except that…
The Abakus is a computer board that was invented in China more than 2000 years ago. It is a simple but very useful instrument that helps in addition and subtraction. He was first made by a man named Suan Pan.