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The Maya civilization was a Mesoamerican civilization developed by the Maya peoples, and noted for its hieroglyphic script--the only known fully developed writing system of the pre-Columbian Americas--as well as for its art, architecture, mathematics, calendar, and astronomical system. The Maya civilization developed in an area that encompasses southeastern Mexico, all of Guatemala and Belize, and the western portions of Honduras and El Salvador. This region consists of the northern lowlands encompassing the Yucatan Peninsula, and the highlands of the Sierra Madre, running from the Mexican state of Chiapas, across southern Guatemala and onwards into El Salvador, and the southern lowlands of the Pacific littoral plain. The Archaic period, prior to 2000 BC, saw the first developments in agriculture and the earliest villages.
The Maya developed their first civilization in the Preclassic period. Scholars continue to discuss when this era of Maya civilization began. Maya occupation at Cuello (modern-day Belize) has been carbon dated to around 2600 BC. Settlements were established around 1800 BC in the Soconusco region of the Pacific coast, and the Maya were already cultivating the staple crops of maize, beans, squash, and chili pepper. This period was characterized by sedentary communities and the introduction of pottery and fired clay figurines. During the Middle Preclassic Period, small villages began to grow to form cities. Nakbe in the Peten department of Guatemala is the earliest well-documented city in the Maya lowlands, where large structures have been dated to around 750 BC. The northern lowlands of Yucatan were widely settled by the Middle Preclassic. By approximately 400 BC, early Maya rulers were raising stelae. A developed script was already being used in Peten by the 3rd century BC. In the Late Preclassic Period, the enormous city of El Mirador grew to cover approximately 16 square kilometres (6.2 sq mi). Although not as large, Tikal was already a significant city by around 350 BC. In the highlands, Kaminaljuyu emerged as a principal centre in the Late Preclassic. Takalik Abaj and Chocola were two of the most important cities on the Pacific coastal plain, and Komchen grew to become an important site in northern Yucatan. The Late Preclassic cultural florescence collapsed in the 1st century AD and many of the great Maya cities of the epoch were abandoned; the cause of this collapse is unknown.
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Who were the Yucatan?

Answer:
Yucatan were widely settled by the Middle Preclassic.

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Ai Carina Uemura (Zhi Cun Ai karina, Uemura Ai Karina, born November 2, 1981), known mononymously as Ai (Japanese pronunciation: [ai], stylized as AI or A.I. ) is a Japanese-American singer and songwriter who was born in Los Angeles. Ai spent her childhood in both Kagoshima, Japan and Los Angeles. She debuted as a singer in 2000, later moving to Def Jam Japan and rising to fame with her album 2004 Ai.
As is standard for Japanese musicians, Ai has featured as a spokesperson, or has her music featured, for many products. Ai's songs have been used as TV commercial songs, drama theme songs, film theme songs and TV show ending theme songs. Ai has worked on four major Coca-Cola TV commercial campaigns, two featuring her own songs ("You Are My Star" (2009), "Happiness" (2011)) and two featuring collaborations (K'naan's "Wavin' Flag" (2009), Namie Amuro's "Wonder Woman" (2011)). She has also been featured in two Audio-Technica campaigns (using "My Friend (Live Version)" and "I'll Remember You", a campaign for Japan Airlines ("Brand New Day") and Pepsi Nex with "I Wanna Know." Ai's most high-profile work for a TV drama was the theme song for 2006's primetime drama Team Medical Dragon, "Believe", which was one of her greatest hits, selling over one million ringtones. Ai also sung the theme song for the drama's second series, "One." Ai also worked on the theme song for the 2010 primetime drama Keishicho Keizoku Sosahan, "Nemurenai Machi." Other program theme songs include the Japanese theme song for the American drama Heroes ("Taisetsu na Mono"), and the 15th ending theme for the children's animation Crayon Shin-chan, "Crayon Beats"). In 2005, Ai's song "Alive (English Version)" was used as an insert song for the South Korean drama Delightful Girl Choon-Hyang. Many of Ai's songs have been used in films. Her "Story" song was remade (also with its English version) for Disney's box office Big Hero 6 in 2014. She performed the theme song for Departures (2008), the winner of the Academy Award for Best Foreign Language Film in 2009. She has also sung the theme songs for Crayon Shin-chan: The Legend Called Buri Buri 3 Minutes Charge (2005), Pray (2005), Lalapipo (2009) and Berserk Golden Age Arc I: The Egg of the High King (2012). Her music has been featured on the soundtracks of TKO Hiphop (2005), the musical film Memories of Matsuko (2006), in which Ai cameoed to perform the song, and Heat Island (2007).
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was she in any commercials?

Answer:
Ai has worked on four major Coca-Cola TV commercial campaigns,

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Rascal Flatts is an American country band formed in Columbus, Ohio in 1999. It is composed of Gary LeVox, his second cousin Jay DeMarcus and Joe Don Rooney. DeMarcus is also a brother-in-law of country music singer James Otto, and formerly one-half of the Christian music duo East to West. They are best known for performing a cover of Tom Cochrane's "Life Is a Highway".
Rascal Flatts' founding was at Fiddle and Steel Guitar Bar in Nashville, Tennessee. Gary LeVox and Jay DeMarcus are second cousins from a musical family. DeMarcus moved to Nashville in 1992, earning his first record deal as part of a Christian group called East to West; his brother-in-law, James Otto, is also a country music singer. In 1997, DeMarcus called LeVox, and convinced him to come to Nashville and provide some harmonies on Michael English's album Gospel, which he was producing. They engineered the album together, and became English's back-up band. At the same time, DeMarcus had become the bandleader of Chely Wright's band, where he met Joe Don Rooney, the guitarist in that band. DeMarcus and LeVox were working in a Printer's Alley nightclub and when their part-time guitarist could not make it one night, DeMarcus invited Rooney to join them. Jim Riley was the drummer and bandleader for the band. The group covered the hit Shenandoah single The Church on Cumberland Road that night. To the group's recollection, a bond was formed instantly. Singer Mila Mason recommended the group to record producers Mark Bright and Marty Williams, who played Lyric Street Records A&R Doug Howard a three-song demo and Howard thought they were "just incredible." After he'd heard the demos, the band went into the Lyric Street offices the next day, sat down with acoustic guitars, and played a couple of songs. According to Howard in an interview with HitQuarters: "The vocals and harmonies, it was all there--I was just blown away. The lead singer has such a unique and compelling voice." The band was signed to Lyric Street in late 1999.
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Are there any other interesting aspects about this article?

Answer:
Singer Mila Mason recommended the group to record producers Mark Bright and Marty Williams,