The United States of Optimism: Americans have always seen a remarkably sunny future for themselves and their country

The late 1830s and early '40s were a bad time in Missouri and most everyplace else in the U.S. People were broke and in debt after a boom in land speculation along the routes of new canals and railroads. In the bust that followed–what became known as the Panic of 1837–banks failed or cut off credit. One Missourian, a 36-year-old storekeeper and self-educated lawyer with a sick wife (a malaria epidemic had swept the Midwest) announced on a day in 1843 that he wanted to start over in the Oregon Territory: "I am done with this country," he said. "Winters……