Fully updated for 2021, this is a comprehensive guide to those extraordinary moments that defined human history, written by respected figures from the fields of

Dictionaries & encyclopedias.

We take thousands of inventions for granted, using them daily and enjoying their benefits. But how much do we really know about their origins and development? T

Presents a review of technological innovations and inventions, from the ancient world to the present day.

Offers profiles of the men and women, past and present, who have shaped American history, society, and culture, in a who's who of American politics, arts, scien