How did the shape of the numbers and letters of the alphabet originate?

Researchers last month suggest that letters look like nature, because that is what we're good at seeing.How did the shape of the numbers and letters of the alphabet originate?
The best answer I can think of is ';Why are boys so dumb?';How did the shape of the numbers and letters of the alphabet originate?
the caveman created rock things and wrote on big rocks
In the English language, the letters are from early Romantic languages, mostly Latin I think, well the actual alphabet is based on the Greek but Latin is a variation. The numbers are Arabic. I don't know how they came about in the beginning.
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Heres a site that deals with this question, have a great day!
The letters originated from the Greek alphabet (alpha-beta). The numbers, I am not so sure.
a small, green, oval-shaped fruit that when peeled and eaten produces a tangy but sweet fruity taste








....sorry,....i thought you said 'what is a kiwi-fruit?'
Most recent ancient history: Letters are greeek, numbers are arabic
The numbers actually originate in India and made amthmatics far easier than the Romain numerals used in the ';West';. They are known as arabic numbers because the arabic traders learnt them from the Indians and it was they that took them to the West.