Youve been watching cspans American History tv. We want to hear fro you have been watching American History tv. Follow us on twitter at cspan history and connect with us at facebook. Com cspan history. Make comments on our website at cspan. Org history. We would like to tell you about our other tv programs. Be with us every saturday at 8 00 and midnight for lectures in history. Join students in the classroom to hear lectures on tops ranging from the American Revolution to the 9 11 terrorist attacks. Lectures in history every saturday at 8 00 and midnight eastern here on American History tv on cspan 3. Up next on American History tv, history professor talks about the dred scott and sanford case. Dred scott was a slave and sued his family for freedom after they had been moved. The court ruled that slave or free blacks could not sue in federal court because they could not be u. S. Citizens. The professor talks about the repercussions of the decision and why the location in missouri was ve