Problem: Background: The Huastec or Teenek (contraction of Te' Inik, "people from here"; also known as Huaxtec, Wastek or Huastecos), are an indigenous people of Mexico, living in the La Huasteca region including the states of Hidalgo, Veracruz, San Luis Potosi and Tamaulipas concentrated along the route of the Panuco River and along the coast of the Gulf of Mexico. There are approximately 66,000 Huastec speakers today, of which two-thirds are in San Luis Potosi and one-third in Veracruz, although their population was probably much higher, as much as half a million, when the Spanish arrived in 1529. The ancient Huastec civilization is one of the pre-Columbian Mesoamerican cultures. Judging from archaeological remains, they are thought to date back to approximately the 10th century BCE, although their most productive period of civilization is usually considered to be the Postclassic era between the fall of Teotihuacan and the rise of the Aztec Empire.
Context: The Huasteca region of Mexico extends from the easternmost limestone ranges of the Sierra Madre Oriental, across the coastal plain and the Otontepec hills to the Gulf of Mexico, in northern Veracruz state, eastern San Luis Potosi state, and (by some definitions) southern Tamaulipas. At least three indigenous languages are spoken in parts of the region today: Nahuatl (a Uto-Aztecan language), spoken especially in Veracruz, but also in San Luis Potosi; Pame (an Oto-Manguean language). spoken in the hilly borderlands of San Luis Potosi and Queretaro; and Huastec (Wastek) (a Maya language), spoken in San Luis Potosi and northernmost Veracruz, and formerly in Tamaulipas. Some would include the Totonac-speaking area, in north-central Veracruz, as part of the Huasteca. The Huastec region was known to the Aztecs (ancestors of today's Nahuatl speakers, who arrived in the Huasteca around 1450) for its fertile abundance, and includes the northernmost patches of tropical moist forest and cloud forest in the Americas. The Huastecs arrived in the Huasteca between 1500 BCE and 900 BCE. The linguistic evidence is corroborated by archaeological discoveries. In 1954, Richard Stockton MacNeish found ceramics and figurines in the Middle Formative period, called "Pavon de Panuco" in the Panuco River sites of the Huasteca, which resemble Preclassic objects from Uaxactun, a Peten-region Maya site. A date of no earlier than 1100 BCE for the Huastecs' arrival at their present location seems most likely, since they probably had not arrived at the north-central Veracruz site of Santa Luisa until about 1200 BCE, the phase at the end of the Early Formative period known locally as the "Ojite phase." Artifacts of the period include Panuco-like basalt manos and metates. (The Huastecs remained in Santa Luisa, located east of Papantla near the Gulf coast, until supplanted or absorbed by the Totonacs around AD 1000). One nexus of carved iconographic traditions, the "yoke-palm-axe" complex, was found from Jaina Island in coastal Campeche to the Huasteca (and in between, in Aparicio, Veracruz), in association with the pelota ballgame, decapitation, and tooth mutilation; however, this may reflect coastal trade contacts after the Huastecs were established in the Huasteca.
Question: what made them split from the maya?
Answer: Panuco River sites of the Huasteca, which resemble Preclassic objects from Uaxactun, a Peten-region Maya site.

Problem: Background: Primal Scream are a Scottish rock band originally formed in 1982 in Glasgow by Bobby Gillespie (vocals) and Jim Beattie. The current lineup consists of Gillespie, Andrew Innes (guitar), Martin Duffy (keyboards), Simone Butler (bass) and Darrin Mooney (drums). Barrie Cadogan has toured and recorded with the band since 2006 as a replacement after the departure of guitarist Robert "Throb" Young. The band performed throughout 1982-1984, but their career did not take off until Gillespie left his position as drummer of The Jesus and Mary Chain.
Context: Their first recording session, for McGee's independent label Essential Records, was a single track entitled "The Orchard", with Judith Boyle on vocals. Beattie later claimed that they burned the master tape. After the aborted recording, Gillespie joined The Jesus and Mary Chain as their drummer, and alternated between the two bands. While the Mary Chain became notorious for their chaotic gigs, Gillespie and Beattie expanded Primal Scream's lineup to include schoolfriend Young on bass, rhythm guitarist Stuart May, drummer Tom McGurk, and tambourine player Martin St. John. This lineup was signed to Creation Records, an independent record label founded by Alan McGee, and recorded the group's debut single, "All Fall Down", which received positive reviews. After the release of the single, Gillespie was told by Mary Chain leaders William and Jim Reid that he was to either dissolve Primal Scream to join the Mary Chain full-time or resign. Gillespie chose to remain with Primal Scream. Stuart May was replaced by Paul Harte, and the group then released a new single, "Crystal Crescent". The b-side, "Velocity Girl", was released on the C86 compilation, which led to their being associated with the scene of the same name. The band strongly disliked this, with Gillespie saying that "they can't play their instruments and they can't write songs." The band toured throughout 1986, and Gillespie became disenchanted with the quality of their performances. He said that there "was always something missing, musically or in attitude." The band switched to McGee's newly set-up Warner Bros. subsidiary Elevation Records. Before the band entered Rockfield Studios in Wales to record their debut album, McGurk was asked to leave the band. The group subsequently began recording using session players. They spent four weeks recording with producer Stephen Street before deciding to halt the sessions. May was subsequently dismissed and Gillespie's former bandmate Innes was brought in as his replacement, and the band finally found a new drummer, Gavin Skinner. With their new lineup, the band re-entered the studio, this time in London with producer Mayo Thompson. By the time Sonic Flower Groove was completed, it had cost PS100,000. The album reached number 62 on the British charts and received poor reviews, with AllMusic calling it "pristine but dull." The backlash from the album caused internal strife within the band. Beattie and Skinner subsequently resigned. The band, now consisting of only Gillespie, Innes and Young, relocated to Brighton to regroup. Young switched to guitar, and they recruited bassist Henry Olsen and drummer Phillip "Toby" Tomanov, who had both been in Nico's backing band, The Faction. They traded in their jangle pop sound for a harder rock edge, or as Gillespie said, "[w]e had found rock 'n' roll." The band re-signed to Creation Records and released their first single in two years, "Ivy, Ivy, Ivy". This was followed by a full album, Primal Scream. The band's new sound was met with poor reviews, NME called it "confused and lacking in cohesion". Fans responded as unfavourably as the critics, with many of the old fans being disappointed or simply confused by the new sound. The album featured Felt keyboardist Martin Duffy guesting.
Question: Did their musical style change with the new members?
Answer:
They traded in their jangle pop sound for a harder rock edge,