Ken Burns is an American documentary filmmaker and historian who is best known for his series of documentaries about American history. His documentaries often feature archival footage and interviews with historians and witnesses to the events he covers. He has produced several documentaries about the American Civil War, including 'The Civil War' and 'The War'. He has also produced documentaries about other topics such as baseball, jazz, and the Vietnam War. His most recent documentary is 'Country Music', which aired on PBS in 2019.