This is the story of a people's struggle for absolute security in a violent and dangerous world. Needing defense against the Mongols whose empire encompassed most of the known world, the Chinese built the Great Wall of China over 200 years. Thousands of miles long, the Wall was guarded by over a million soldiers manning thousands of forts and towers.

Wonders of the World series

The winner of numerous awards, this series is renowned for Elizabeth Mann's ability to convey adventure and excitement while revealing technical information in engaging and easily...