Background: The Blackfoot Confederacy, Niitsitapi or Siksikaitsitapi (nitmowmeko, meaning "the people" or "Blackfoot-speaking real people") is a historic collective name for the four bands that make up the Blackfoot or Blackfeet people: three First Nation band governments in the provinces of Saskatchewan, Alberta, and British Columbia, and one federally recognized Native American tribe in Montana, United States. The Siksika ("Blackfoot"), the Kainai or Kainah ("Blood"), and the Northern Piegan or Peigan or Piikani ("Apa'tosee" or "Poor Robes") reside in Canada; the Southern Piegan/Piegan Blackfeet ("Amskapi Piikani" or Pikuni) are located in the United States, where they are also known as the Blackfeet Nation. In modern use, the term is sometimes used only for the three First Nations in Canada. Historically, the member peoples of the Confederacy were nomadic bison hunters and trout fishermen, who ranged across large areas of the northern Great Plains of western North America, specifically the semi-arid shortgrass prairie ecological region.
Context: The Niitsitapi, also known as the Blackfoot or Blackfeet Indians, reside in the Great Plains of Montana and the Canadian provinces of Alberta and Saskatchewan. Only one of the Niitsitapi tribes are called Blackfoot or Siksika. The name is said to have come from the color of the peoples' moccasins, made of leather. They had typically dyed or painted the soles of their moccasins black. One legendary story claimed that the Siksika walked through ashes of prairie fires, which in turn colored the bottoms of their moccasins black.  Due to language and cultural patterns, anthropologists believe the Niitsitapi did not originate in the Great Plains of the Midwest North America, but migrated from the upper Northeastern part of the country. They coalesced as a group while living in the forests of what is now the Northeastern United States. They were mostly located around the modern-day border between Canada and the state of Maine. By 1200, the Niitsitapi were moving in search of more land. They moved west and settled for a while north of the Great Lakes in present-day Canada, but had to compete for resources with existing tribes. They left the Great Lakes area and kept moving west.  When they moved, they usually packed their belongings on an A-shaped sled called a travois. The travois was designed for transport over dry land. The Blackfoot had relied on dogs to pull the travois; they did not acquire horses until the 18th century. From the Great Lakes area, they continued to move west and eventually settled in the Great Plains.  The Plains had covered approximately 780,000 square miles (2,000,000 km2) with the Saskatchewan River to the north, the Rio Grande to the south, the Mississippi River to the east, and the Rocky Mountains to the west. Adopting the use of the horse, the Niitsitapi established themselves as one of the most powerful Indian tribes on the Plains in the late 18th century, earning themselves the name "The Lords of the Plains." Niitsitapi stories trace their residence and possession of their plains territory to "time immemorial."
Question: what did they do to become powerful?
Answer: Adopting the use of the horse, the Niitsitapi established themselves as one of the most powerful Indian tribes

Background: Florence Leontine Mary Welch was born in Camberwell, London on 28 August 1986. Her father is Nick Russell Welch, an advertising executive. Her mother, Evelyn Welch (nee Evelyn Kathleen Samuels), is an American emigrant from New York City who was educated at Harvard University and the Warburg Institute, University of London. Evelyn is currently Professor of Renaissance Studies and Vice-Principal for Arts and Sciences at King's College London.
Context: According to Welch, the band name "Florence + the Machine" had "started off as a private joke that got out of hand. I made music with my friend, who we called Isabella Machine, to which I was Florence Robot. When I was about an hour away from my first gig, I still didn't have a name, so I thought 'Okay, I'll be Florence Robot/Isa Machine', before realising that name was so long it'd drive me mad". In 2006, Welch's performances with Isabella Summers in small London venues under the joint name Florence Robot/Isa Machine began to attract notice. In 2007, Welch recorded with a band named Ashok, who released an album titled Plans on the Filthy Lucre/About Records label. This album included the earliest version of her later hit "Kiss with a Fist", which at this point was titled "Happy Slap".  Florence and the Machine released their debut album Lungs in the United Kingdom on 6 July 2009. The album was officially launched with a set at the Rivoli Ballroom in Brockley, South East London. It peaked at number one in the UK and number two in Ireland. As of 6 August 2009, the album had sold over 100,000 copies in the UK and by 10 August it had been at number two for five consecutive weeks. Following its 25 July 2009 release for download in the United States, the album debuted at number seventeen on the Billboard Heatseekers Albums chart, ultimately peaking at number one. The album was released physically in the US on 20 October by Universal Republic. The album was produced by James Ford, Paul Epworth, Steve Mackey and Charlie Hugall.  Welch contributed vocals to David Byrne and Fatboy Slim's 2010 album Here Lies Love, an album about Imelda Marcos. As of January 2011, Welch was working with Drake on material slated for his upcoming album.  On 27 February 2011, Welch replaced pregnant Dido and sang her portion of Best Original Song nominee "If I Rise" (from 127 Hours) with A. R. Rahman at the 83rd Academy Awards.
Question: did they produce the song?
Answer:
The album was produced by James Ford, Paul Epworth, Steve Mackey and Charlie Hugall.