Top critical review
No index makes this practically useless as a reference book or study guide.
Reviewed in the United States on September 17, 2017
I borrowed by sister's 3rd edition and found it extremely helpful for my college class (not AP, but same important material). It summed up events and terms more succinctly than the my textbook and clarified a lot of key points. I was using the index to find what I needed for my class. But, she needed the book back so I bought my own. Naturally, I bought the 4th edition, assuming it would be more relevant if I ever sold it. BUT, it doesn't have an index! It's extremely difficult to study a specific topic if you can't look up all the sections that discuss it.
The 3rd edition is broken down into sections: key terms, content review, key themes and facts. The "key themes and facts" section is further segregated into: key evens in African American History, women's history, Native American history, Supreme Court cases & trials, works of art, labor laws & unions, legislative acts, immigration, foreign policies, etc. Some subjects and terms show up in multiple sections. The index was incredibly helpful. But this 4th edition doesn't have an index, thus rendering it practically useless for a reference or study book. Who studies page by page? Don't people study for tests by focusing on subjects that they're less familiar with? Good luck thumbing through the book and finding each page that discusses the area you're focusing on. Totally disappointed. Should have stuck with the 3rd edition.
I'm assuming the only difference is the updated study guide info that changes as the AP tests change. I'd stick with the 3rd edition.