Question: Seoul Train and Making North America are both films in what style of cinema or film making genre?

Related documents: [0]  [DOC] Making North America is a 2015 American documentary film which premiered nationwide on November 4, 2015. The PBS Nova film, in three-episodes of one hour each, was hosted by Kirk Johnson (Director of the Smithsonian National Museum of Natural History); Peter Oxley directed the first episode while Gwyn Williams directed the second and third. The series describes the very beginnings and later developments of the North American continent: from the origin of planet Earth 4.54 billion years ago; to the various movements of tectonic plates and their effect on the sculpturing of the continent's land and mountains, including the Rocky Mountains, Yellowstone and the Grand Canyon; to the emergence of life on the continent and its later evolution; and, finally, to the more recent settlement of the land by humans. According to Johnson, "Most people will not have considered a time when there was no North America ... What was there before North America? How did it form? When did it start? How did it come together?" [END] 
[1]  [DOC] Seoul Train is a 2004 documentary film that deals with the dangerous journeys of North Korean defectors fleeing through or to China. These journeys are both dangerous and daring, since if caught, they face forced repatriation, torture, and possible execution. [END]  
Answer: documentary
documentary