Triangle Histories introduce a new concept to American history series. Each title in this collection interweaves and overlaps with others in its own unique way. And each title provides a different perspective on the subject. For example, The Battle of Vicksburg, the biography Ulysses S. Grant, and the biography Abraham Lincoln, overlap and intersect at a number of points. Grant was the Union commander at Vicksburg at a time when Lincoln was under great pressure to replace the general. Because the Triangle Histories provide a format in which major subjects and themes can be considered from various angles, each collection offers a truly unique way to learn and understand the topic more completely. Each book stands alone, but as a set, the Civil War collection forms a powerful and engaging way in which to learn about one of the most painful eras our nation has ever endured.