Discover the comprehensive collection of “What Happened? an Encyclopedia of Events That Changed America Forever” by Frank W. Thackeray. This 4-volume textbook covers the social history of the United States, featuring 1251 pages of detailed information on the events that shaped the country. Published by ABC-Clio, LLC in 2010, this hardcover book is a must-have for any history enthusiast. The book is categorized under “Textbooks, Education & Reference” and “Books & Magazines.” Get your hands on this valuable resource today!