If you were to pick a U.S. state you think people generally know little to nothing about, which one comes to mind?  If you're like me, Alaska, which became the 49th state in 1959, is a sure contender. Alaska is derived from the Aleut word "alyeska," which stands for "great land." On this day in 1867, the United States formally took possession of what became the largest state in the country after buying the territory from Russia for $7.2 million. Most people assume Texas is the largest U.S. state, but Alaska is roughly twice the size of the Lone Star State in area and about one-fifth the size of the contiguous 48 states combined. So why would Russia want to sell its Alaska territory in the first place? For starters, it was remote, sparsely populated, and hard to defend. Russia preferred selling it to the United States than risk losing it in battle with a rival like Great Britain. Negotiations between secretary of state William Seward and the Russian m...