THE MAINSPRING OF HUMAN PROGRESS

by Henry Grady Weaver

For 6,000 years people died of hunger. Why don't we? What invention contributed most to our wealth? Who invented zero, andwhy? What is the difference between a republic and democracy? Is there a sure-fire formula for personal security? This truly fascinating journey through history boldly answers these and countless other questions, in a delightfully clear, concise, and well-written volume.