By Gary Blackwood
History?s impressive secrets and techniques and codes?and tips on how to crack them yourself.
This interesting examine history?s such a lot mysterious messages is filled with puzzles to decode and ciphers that youngsters can use themselves. listed below are the encrypted notes of Spartan warriors, the bright code-crackers of Elizabeth I, mystery messages of the yank Revolution, undercover agent books of the Civil warfare, the recognized Enigma computing device, and the Navajo code talkers. As pcs switch the way in which we converse, codes at the present time are extra fascinating than ever.
From invisible ink to the CIA, this intriguing journey via background is a hands-on, interactive adventure? so get cracking!