well, and take out the lifestream for this year for american history. i m vice president of the university of columbia and we are delighted to be partnering once again at columbia and monitoring this event and was cspan s american history tv, present and in the future. thank you so much for joining us and for this important discussion and, the centers new annual stream. and at the center of the partnership is truly a department of history and moderated and embarks on mission last year to have engagement and social responsibility and the history of this urgent need that we must address. i m especially delighted to introduce our panel tonight, doctor mcdaniel are featured spiegel, caleb mcdaniel, about humanities and the department of history. and the professor caleb mcdaniel specializes in u.s. history, and an american civil war era. in the latest book, a true story of slavery and restitution in america. on the weekly press and awarded the pulitzer prize for history and brav