Manifest Destiny . Manifest Destiny, a term coined by journalist John O’Sullivan in 1845, was a driving force in 19th century America’s western expansion—the era of U.S. territorial expansion is sometimes called the Age of Manifest Destiny. Explain Manifest Destiny and discuss the Louisiana Purchase. How did the market revolution and westward expansion intensify the institution of slavery? How did enslaved people create community and a culture that allowed them to survive in an oppressive society? Discuss the Underground Railroad. Discuss the concept of Popular Sovereignty.
Manifest Destiny In the nineteenth century the United States vastly expanded the size of its territory. How was ideology used to justify this expansion? Using nineteenth-century maps and art, students consider the roots of American exceptionalism.