From the 1780s, the question of whether slavery would be permitted in new territories had threatened the Union. Over the decades, many compromises had been made to avoid disunion. But what did the Constitution say on this subject? This question was raised in 1857 before the Supreme Court in case of Dred Scott vs. Sandford. Dred Scott was a slave of an army surgeon, John Emerson. Scott had been taken from Missouri to posts in Illinois and what is now Minnesota for several years in the 1830s, before returning to Missouri. The Missouri Compromise of 1820 had declared the area including Minnesota free. In 1846, Scott sued for his freedom on the grounds that he had lived in a free state and a free territory for a prolonged period of time. Finally, after eleven years, his case reached the Supreme Court. At stake were answers to critical questions, including slavery in the territories and citizenship of African-Americans. The verdict was a bombshell.

U.S. History is designed for a two-semester American history sequence. It is traditional in coverage, following a roughly chronological outline, and using a balanced approach that includes political, economic, social, and cultural developments. At the same time, the book includes a number of innovative and interactive features designed to enhance student learning. Instructors can also customize the book, adapting it to the approach that works best in their classroom.