Knives are one of those things that came about by chance and is impossible to know where the first one was found. They was more found then they were made as the first knives were pieces of broken flint, rock, etc and uses were discovered for them such as skinning, whittling, etc. Eventually-they evolved as people discovered they could make the knives more suitable for use by the use of flintknapping.
A knife is conductible as the blade is made of steel.
A bread knife is probably made of some kind of steel, but not aluminum.
It is a knife made of bronze that was crafted by the Incas
A Swiss army knife is made of stainless steel.
schrade made a type of bear hunting knife but theres other also
The steel blade of a knife will hold a sharp cutting edge.
wood and a knife
flint
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to cut stuff
stone
The RH 50 was a Boy Scout knife made from 1925-1940 with several variations.