I believe it was the use of poisonous gasses, which they not only used on the Jews but in war too......., or The newly created Machine gun<span />
The similarity in both invasions of Russia is.
They both Failed.
I believe the answer is Barbed Wire.
Befor the inventions of barbed wire, the Cattles are let to roam freely across the plains and the owners are required to pay a lot of cowboys to supervise them so they didn't go missing. Witht he invention of barbed wire, they can keep the cattle in a secure place without supervision.
John Henry sold documents called the Henry Papers to the United States persuading treason by federalists with great Britain. these Henry Papers built anger against Britain (he was a spy).
