WHAT'S INSIDE: ANCIENT CIVILIZATIONS
FEATURED: ANCIENT CIVILIZATIONS
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Valley of the Kings, a low-lying area on the west bank of the Nile River, in Egypt.
Studying lost civilizations is about more than marveling at pyramids or ancient architecture -- it's an opportunity to learn what kinds of things can bring a once great empire to its knees. How much do you know about some of history's lost cultures?