Problem: The Mississippian culture was a mound-building Native American civilization archeologists date from approximately 800 CE to 1600 CE, varying regionally. It was composed of a series of urban settlements and satellite villages (suburbs) linked together by a loose trading network, the largest city being Cahokia, believed to be a major religious center. The civilization flourished from the southern shores of the Great Lakes at Western New York and Western Pennsylvania in what is now the Eastern Midwest, extending south-southwest into the lower Mississippi Valley and wrapping easterly around the southern foot of the Appalachians barrier range into what is now the Southeastern United States. The Mississippian way of life began to develop in the Mississippi River Valley (for which it is named).

The Mississippi stage is usually divided into three or more chronological periods. Each period is an arbitrary historical distinction varying regionally. At a particular site, each period may be considered to begin earlier or later, depending on the speed of adoption or development of given Mississippian traits. The "Mississippi period" should not be confused with the "Mississippian culture". The Mississippi period is the chronological stage, while Mississippian culture refers to the cultural similarities that characterize this society. The Early Mississippi period (c. 1000-1200 CE) had just transitioned from the Late Woodland period way of life (500-1000). Different groups abandoned tribal lifeways for increasing complexity, sedentism, centralization, and agriculture. Production of surplus corn and attractions of the regional chiefdoms led to rapid population concentrations in major centers. The Middle Mississippi period (c. 1200-1400) is the apex of the Mississippi era. The expansion of the great metropolis and ceremonial complex at Cahokia (in present-day Illinois), the formation of other complex chiefdoms, and the spread and development of SECC art and symbolism are characteristic changes of this period. The Mississippian traits listed above came to be widespread throughout the region. The Late Mississippi period (c. 1400-1540) is characterized by increasing warfare, political turmoil, and population movement. The population of Cahokia dispersed early in this period (1350-1400), perhaps migrating to other rising political centers. More defensive structures are often seen at sites, and sometimes a decline in mound-building and large scale, public ceremonialism. Although some areas continued an essentially Middle Mississippian culture until the first significant contact with Europeans, the population of most areas had dispersed or were experiencing severe social stress by 1500. Along with the contemporaneous Ancestral Pueblo peoples, these cultural collapses coincide with the global climate change of the Little Ice Age. Scholars theorize drought and the reduction of maize agriculture, together with possible deforestation and overhunting by the concentrated populations, forced them to move away from major sites. This period ended with European contact in the 16th century.

what is chronology?

Answer with quotes: divided into three or more chronological periods.

Problem: Future Islands is an American synthpop band based in Baltimore, Maryland, and signed to 4AD, currently comprising Gerrit Welmers (keyboards and programming), William Cashion (bass, acoustic and electric guitars), and Samuel T. Herring (lyrics and vocals). The band was formed in January 2006 by Welmers, Cashion and Herring--the remaining members of the performance art college band Art Lord & the Self-Portraits--and drummer Erick Murillo. Murillo left in November 2007, after which the band relocated to Baltimore, MD, and released the debut album Wave Like Home through British label

Sam Herring and Gerrit Welmers grew up in Morehead City, North Carolina two streets away from each other, and attended the same middle school in Newport, North Carolina. They became friends around 1998, when they were in 8th grade. Herring had started making hip-hop music when he was 13 or 14, while Gerrit was a skater with interests in metal and punk music who bought his first guitar at age 14. Having different musical backgrounds, they did not consider making music together during high-school. William Cashion started playing guitar when he was around 13, having had a couple of bands as a teenager in Raleigh, where he commuted to High School from Wendell, North Carolina. In 2012 he enrolled in the painting and drawing program at ECU and had drawing classes with Sam Herring. The idea to form a band came while Cashion was helping Herring study for an art history exam. They invited local record shop personality Adam Beeby to play rhythmic keyboards and fellow art student Kymia Nawabi for percussion and backing vocals. After a tumultuous debut on Valentine's Day February 14, 2003 at Soccer Moms' House, Herring also invited Welmers to join the band. Only Cashion and Welmers already played a musical instrument--the guitar--but Cashion took the bass and Welmers the keyboards, for a Kraftwerk-inspired sound. Sam Herring played Locke Ernst-Frost an arrogant narcissistic artist from Germany, Ohio, dressed in a 70's-inspired white suit with slicked-back hair, and a heavy German accent. The character's name originally was meant to be Oarlock Ernest Frost but it got shortened as a reference to John Locke the religious poet, Max Ernst, the artist and Robert Frost, the American poet. The band quickly gained a local reputation and started touring the underground venues in the Southwest, playing shows with North Carolina acts like Valient Thorr and Baltimore artists such as Height, Videohippos, OCDJ, Nuclear Power Pants, Santa Dads, Ecstatic Sunshine, Blood Baby, Ponytail and electronic musician Dan Deacon whom they met during a show on May 26, 2004. Nawabi who was already a senior when Cashion, Herring and Welmers were freshmen, left the band to prepare for her graduation project in June-July 2003. When Adam Beeby had to leave Greenville in September 2005, the remaining members dissolved the band.

Did they know each other before that?

Answer with quotes:
Sam Herring and Gerrit Welmers grew up in Morehead City, North Carolina two streets away from each other, and attended the same middle school in Newport, North Carolina.