Watch History Detectives online: Episode 2 Iwo Jima Map, Copperhead Cane, Theremin

Iwo Jima Map - What role did this map play in one of WWII’s fiercest battles? Copperhead Cane - How did this cane inspire a fiery political movement that threatened Lincoln’s presidency? Theremin - How did this strange instrument help spark a rock n’ roll revolution?

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