Tungstein
They find the clue in Venice Italy. The swords they found were made of tungsten.
Dan and Amy found the swords made of tungsten in a private exhibit in Venice called the Collezione di Racco, which displayed multimillionaire Fidelio Racco's treasures and artwork.
Samurai swords are from Japan. The swords were made of hardened steel.
It IS not true but all the facts and info are. This was made by imagination.
Season of the Machete is the second book he has made.
it was made in 1998
Swords are made of metal. Arrows can be made of wood. Arrows have been around a good deal longer than swords.
Swords were invented in 3500 B.C. Back then swords were made out of Bronze, an alloy of copper and tin.
His second overall book is "GERM," about a designer virus, but the second book in his "Dreamhouse Kings" series (YA) is called "WATCHER IN THE WOODS."
Steel
In the book no reference is made to this
The Samurai swords were built of the strongest steel of any swords ever made.