March of the Penguins (French La Marche de l'empereur ; ] ) is a 2005 French feature-length nature documentary directed and co-written by Luc Jacquet, and co-produced by Bonne Pioche and the National Geographic Society.
 The documentary depicts the yearly journey of the emperor penguins of Antarctica.
 In autumn, all the penguins of breeding age (five years old and over) leave the ocean, their normal habitat, to walk inland to their ancestral breeding grounds.
 There, the penguins participate in a courtship that, if successful, results in the hatching of a chick.
 For the chick to survive, both parents must make multiple arduous journeys between the ocean and the breeding grounds over the ensuing months.
There's Something About Ashley is a documentary released by Warner Bros.
 Records about the beginning of Ashley Tisdale's solo music career and was released on November 6, 2007.
 The DVD includes 3 new music videos from her debut album "Headstrong" and a documentary.
 The music videos in the DVD are "He Said, She Said", "Not Like That", and "Suddenly", which are all directed by Scott Speer.
 Tisdale's sister Jennifer and Josh Henderson from "Desperate Housewives" made appearances.
Blood Surf (also known by its original title, Krocodylus) a 2000 horror film directed by James D.R. Hickox.
 It was released in the United States on June 26, 2001 but was released earlier in some countries.
 The plot of the movie entails a pair of entrepreneurs with more bravery than brains hit upon the idea of blood surfing: spreading chum in the water in order to attract sharks, then hopping on a surfboard and riding through the middle of the pack.
 As they are filming their promotional documentary, the fun gets interrupted by a thirty-foot long salt water crocodile that begins snacking on everyone in the expedition.
Steel Gunner (スティールガンナー , Sutīru Gannā ) is a first-person shooter arcade game that was released by Namco in 1990; it runs on Namco System 2 hardware, and was the second game from the company to utilize lightguns (the first was "Golly!
 Ghost!
", which was released earlier in 1990 and it was also their fourth game to allow scores not ending in "0").
 A sequel, Steel Gunner 2, was released in 1991 and the US version of it was also the second game from the company to feature the Federal Bureau of Investigation's "Winners Don't Use Drugs" screen in the attract sequence (the first was "Tank Force", which was released earlier in 1991) - and it would later go on to feature in five more US-released Namco titles.
Dalekmania is a 1995 direct-to-video documentary released in the United Kingdom.
 "Dalekmania" is the name given to the craze or "mania" among children in the United Kingdom in the 1960s for all things associated with writer Terry Nation's creations, the Daleks, who were then regularly appearing in the BBC's television drama series "Doctor Who".
Shape of the Moon (Dutch: "Stand van de maan" ) is a Dutch/Indonesian documentary film from 2004 directed by Leonard Retel Helmrich.
 The documentary released on 24 November 2004 as opening film of IDFA (International Documentary Festival Amsterdam).
...So Goes The Nation is a 2006 political documentary that follows the 2004 United States presidential election between John Kerry and George W. Bush, concentrating on the battleground state of Ohio.
 The film interviews campaign workers on both sides and analyzes the outcome of the results.
 The name comes from the saying that "As Ohio goes, so goes the nation".
 In 2004, Ohio swung the election, and in fact no Republican has ever won the White House without Ohio.
Eye of the Day is a Dutch/Indonesian documentary from 2001 directed by Leonard Retel Helmrich.
 The documentary released on 1 March 2001.
The Revival Women and the Word was a documentary released in 2016, the director of this film is Sekiya Dorsett, a queer filmmaker who works to give voice to issues of equality.
 This documentary chronicles a US tour group of Black lesbian poets and musicians who are traveling performing making history as queer women of color.
 Their journey is to bring together their community and include interviews from leading black feminist and queer thinkers which includes, Dr. Alexis Pauline Gumbs, Nikki Finney, and Alexis Deveaux.
 This documentary tackles themes such as gender, race, and sexuality.
 This film works to represent community and provide a special insight to the experience of queer women of color performers.
 Additionally, this film works to empower and raise the voices of the marginalized.
Nostalgia for the Light (Spanish: "Nostalgia de la Luz" ) is a documentary released in 2010 by Patricio Guzmán to address the lasting impacts of Augusto Pinochet’s dictatorship.
 Guzmán focuses on the similarities between astronomers researching humanity’s past, in an astronomical sense, and the struggle of many Chilean women who still search, after decades, for the remnants of their relatives executed during the dictatorship.
 Patricio Guzmán narrates the documentary himself and the documentary includes interviews and commentary from those affected and from astronomers and archeologists.

Question: Which documentary released earlier, "...So Goes the Nation" or "March of the Penguins"?
Answer: March of the Penguins