Question: What happened first, the release of Zooropa or Zoo TV Tour?
Context: Zooropa is the eighth studio album by Irish rock band U2.  Produced by Flood, Brian Eno, and The Edge, it was released on 5 July 1993 on Island Records.  Inspired by the band's experiences on the Zoo TV Tour, "Zooropa" expanded on many of the tour's themes of technology and media oversaturation.  The record was a continuation of the group's experimentation with alternative rock, electronic dance music, and electronic sound effects that began with their previous album, "Achtung Baby", in 1991. Zoo TV: Live from Sydney is a concert video release by rock band U2 from the "Zoomerang" leg of their Zoo TV Tour.  Recorded on Saturday, 27 November 1993 at Sydney Football Stadium on the band's featured stop in Sydney, Australia, it was released in May 1994 on VHS and Laserdisc, and re-released in September 2006 on DVD.  It won the Grammy Award for Best Music Video, Long Form in 1994.  The show was also broadcast around the world live on pay-per-view. "Acrobat" is a song by rock band U2.  It is the eleventh track on their 1991 album "Achtung Baby".  The critical failure of "Rattle and Hum" (1988) led the band to seek a harder sound in their music.  The song developed from a riff created by guitarist The Edge, and is played in a ⁄ time signature.  Thematically the song contains elements of hypocrisy, alienation, and moral confusion.  "Acrobat" has never been performed live, although it was rehearsed prior to the third leg of the Zoo TV Tour. Achtung Baby ( ) is the seventh studio album by Irish rock band U2.  It was produced by Daniel Lanois and Brian Eno, and was released on 18 November 1991 on Island Records.  Stung by criticism of their 1988 release, "Rattle and Hum", U2 shifted their musical direction to incorporate influences from alternative rock, industrial music, and electronic dance music into their sound.  Thematically, "Achtung Baby" is darker, more introspective, and at times more flippant than their previous work.  The album and the subsequent multimedia-intensive Zoo TV Tour were central to the group's 1990s reinvention, by which they abandoned their earnest public image for a more lighthearted and self-deprecating one. The MYH16 gene encodes a protein called myosin heavy chain 16 which is a muscle protein in mammals.  At least in primates, it is a specialized muscle protein found only in the temporalis and masseter muscles of the jaw.  Myosin heavy chain proteins are important in muscle contraction, and if they are missing, the muscles will be smaller.  In non-human primates, MYH16 is functional and the animals have powerful jaw muscles.  In humans, the MYH16 gene has a mutation which causes the protein not to function.  Although the exact importance of this change in accounting for differences between humans and other apes is not yet clear, such a change may be related to increased brain size and finer control of the jaw which facilitates speech.  It is not clear how the MYH16 mutation relates to other changes to the jaw and skull in early human evolution (for example, whether the MYH16 mutation happened first and led to other changes, or whether the MYH16 mutation happened after other changes made the MYH16 protein no longer necessary). "Numb" is a song by rock band U2.  It is the third track from their 1993 album "Zooropa" and was released in June 1993 as the album's first single.  The song features a monotonous mantra of "don't" commands spoken by guitarist the Edge amidst a backdrop of various sound effects and samples.  The noisy composition and lyrical concept for "Numb" were inspired by the theme of sensory overload, which had prominently been incorporated into the Zoo TV Tour.  Lead singer Bono and drummer Larry Mullen Jr. provided backing vocals on the track.  The song received remixes from Paul Oakenfold, Rollo Armstrong and Rob Dougan. Icelandic music composer and singer Björk has embarked on seven concert tours, with all of them being worldwide.  After her split up with The Sugarcubes, Björk embarked in her first concert tour to promote "Debut".  The Tour lasted one year, from August 1993 to July 1994, and included a concert to support the U2 on their Zoo TV Tour at the Wembley Stadium.  The following year, she performed on the worldwide Post Tour which was extensively long and critically lauded.  The tour visited different festivals and arenas throughout Europe, North America, Oceania and Asia and featured the first performance in South America.  In November 1997, with the release of "Homogenic" she embarked on the Homogenic Tour after promoting the album with a short promotional tour earlier during the same year.  The Tour was extended in 1998 after a cancelled North America tour with the Radiohead.  After the end of the tour in 1999, Björk embarked on the Vespertine World Tour which featured performances with a full Orchestra in Opera houses.  The tour was critically lauded and financially expensive.  In 2003 she toured throughout Europe and North America (including one stop in Asia) for her Greatest Hits Tour, performing in Stadiums and headlining major European Festivals. Zoo TV Live is a live album by the Irish rock band U2.  It was released exclusively to subscribing members of U2's official site, replacing "U2.COMmunication" on 20 November 2006.  This double CD features the same material that is on the "" VHS and DVD releases, as well as one bonus track from the Zoo TV special, "Tryin' to Throw Your Arms Around the World."  Although U2's website refers to the album as ZOO2Live, the album is titled "Zoo TV Live" according to the actual CDs.  This album was discontinued from the website for the release of "" in 2007.  Recently for the U2.com 2012/13 subscriber offer, the album was included as part of a 'bundle' edition along with U22 and 11 instant downloads from U22. The Zoo TV Tour (also written as ZooTV, ZOO TV or ZOOTV) was a worldwide concert tour by rock band U2.  Staged in support of their 1991 album "Achtung Baby", the tour visited arenas and stadiums from 1992 to 1993.  To mirror the new musical direction that the group took with "Achtung Baby", the tour was intended to deviate from their past and confound expectations of the band.  In contrast to U2's austere stage setups from previous tours, the Zoo TV Tour was an elaborately staged multimedia event.  It satirised television and media oversaturation by attempting to instill "sensory overload" in its audience.  To escape their reputation for being earnest and overly serious, U2 embraced a more lighthearted and self-deprecating image on tour.  Zoo TV and "Achtung Baby" were central to the group's 1990s reinvention. The PopMart Tour was a worldwide concert tour by rock band U2.  Launched in support of the group's 1997 album, "Pop", the tour's concerts were performed in stadia and parks in 1997 and 1998.  Much like the band's previous Zoo TV Tour, PopMart was elaborately staged.  Its lavish stage design had a 165 ft wide LED screen, a 100 ft -high golden arch, and a large mirror-ball lemon.  As with the Zoo TV tour, the band delivered an image and performance that were ironic and self-mocking, deviating from its earnest performances of the 1980s; the band performed in costumes that, along with the PopMart stage design, poked fun at the themes of consumerism and pop culture.
Answer: The Zoo TV Tour