Question: What athletic conference is based in the Great Lakes region and stretches from Western New York to Illinois?

Context articles: Great Lakes region
Indianapolis Greyhounds
Barnes projectile point
Calumet Region
Mid-American Conference
Buffalo Niagara Region
Pontiac's War
Inland Northern American English
GLIAC Men's Basketball Tournament
Eastern Michigan Eagles men's basketball

The Great Lakes region of North America is a bi-national Canadian-American region that includes portions of the eight U.S. states of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania and Wisconsin as well as the Canadian province of Ontario.
 The region borders the Great Lakes and forms a distinctive historical, economic, and cultural identity.
 A portion of the region also encompasses most of the Great Lakes Megalopolis, which extends outside the region to St. Louis, Missouri.
The Indianapolis Greyhounds (also UIndy Greyhounds) are the athletic teams that represent the University of Indianapolis, located in Indianapolis, Indiana, in NCAA Division II intercollegiate sports.
 The Greyhounds compete as members of the Great Lakes Valley Conference for 19 of 23 varsity sports (both swimming and diving teams & women's lacrosse are members of the Great Lakes Intercollegiate Athletic Conference.
 Men's lacrosse competes in the Eastern College Athletic Conference).
 Indianapolis has been part of the GLVC since 1978.
Barnes' points are lanceolate Paleo-Indian projectile points distributed throughout the lower northeastern United States, from Missouri to the Great Lakes area, extending into Canada.
 Barnes points are associated with the Early Paleoindian Parkhill complex of the eastern Great Lakes region, with sites being especially common in southwestern Ontario.
 Barnes points have also been found in northeastern Indiana, which suggests affinities with the Great Lakes region during the early and middle portions of the Paleoindian period.
 It is a large, fluted spear point with "delicate ears" and a fishtail base.
 The fluting, or groove in the center of the point, tends to extend nearly the entire length of the point.
 It was first classified in 1963 by William Roosa.
 The Barnes site, in Midland County, Michigan, was first located by Mr. Wallace Hill, whose house was then a few hundred feet from the site.
 The staff of the University of Michigan Museum of Anthropology was informed of the site in 1959.
 William Roosa recognized that the fluting technique on the points, while similar to that of Folsom points, was otherwise unique.
The Calumet Region is the name given to the geographic areas drained by the Grand Calumet River and the Little Calumet River of northeastern Illinois and northwestern Indiana in the United States.
 It is part of the Great Lakes Basin, which eventually reaches the Atlantic Ocean.
 This region includes the northern parts of Lake and Porter counties and the western portion of La Porte county in Indiana, as well as the eastern counties of northern Illinois, Will and Cook.
 Since much of this region is on the south shore of Lake Michigan, it is sometimes referred to as the "South Shore".
 Because it was initially cut off from the rest of the state due to natural geographic barriers like the Kankakee Marsh to the south, the Calumet Region was the last-settled portion of Indiana.
 It is a sub-region of the greater Northwest Indiana region and the even larger Great Lakes region.
The Mid-American Conference (MAC) is a National Collegiate Athletic Association (NCAA) Division I collegiate athletic conference with a membership base in the Great Lakes region that stretches from Western New York to Illinois.
 Nine of the twelve full member schools are in Ohio and Michigan, with single members located in Illinois, Indiana, and New York.
 For football, the MAC participates in the NCAA's Football Bowl Subdivision.
The Buffalo Niagara Region is an economic region that is part of the Great Lakes region of North America, comprising much of Western New York in the United States.
 The Regional Institute of the University at Buffalo has defined the region as including the eight westernmost counties in New York.
Pontiac's War (also known as Pontiac's Conspiracy or Pontiac's Rebellion) was launched in 1763 by a loose confederation of elements of Native American tribes, primarily from the Great Lakes region, the Illinois Country, and Ohio Country who were dissatisfied with British postwar policies in the Great Lakes region after the British victory in the French and Indian War (1754–1763).
 Warriors from numerous tribes joined the uprising in an effort to drive British soldiers and settlers out of the region.
 The war is named after the Odawa leader Pontiac, the most prominent of many native leaders in the conflict.
Inland Northern (American) English, also known in the United States as the Inland North or Great Lakes dialect, is an American English dialect spoken in a geographic band reaching from Central New York westward along the Erie Canal, through most of the U.S. Great Lakes region, to eastern Iowa.
 The most advanced Inland Northern accents are spoken in the cities of Chicago, Illinois; Milwaukee, Wisconsin; Detroit, Michigan; Cleveland, Ohio; and Buffalo, Rochester, and Syracuse, New York.
 A geographic corridor that extends across a section of Illinois, reaching from Chicago into St. Louis, Missouri, has also been infiltrated by features of the Inland Northern accent, though not historically part of the Inland North dialect region.
The Great Lakes Intercollegiate Athletic Conference (GLIAC) Men's Basketball Tournament is the annual conference basketball championship tournament for the Great Lakes Intercollegiate Athletic Conference.
 The tournament has been held annually since 1991.
 It is a single-elimination tournament and seeding is based on regular season records.
The Eastern Michigan Eagles men's basketball team represents Eastern Michigan University in Ypsilanti, Michigan.
 The team currently competes in the West division of the Mid-American Conference (MAC).
 They have appeared in four NCAA Division I tournaments and have a 3–4 record, tied for third best among Michigan colleges.
 They reached the Sweet Sixteen in the 1991 NCAA Men's Division I Basketball Tournament and defeated the Duke Blue Devils in the first round of the 1996 tournament.