Chicago, USA

Chicago (i/ʃɪˈkɑːɡoʊ/ or /ʃɪˈkɔːɡoʊ/) is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the third most populous in the U.S.[1] Its metropolitan area, sometimes called "Chicagoland," is the third largest in the United States,with an estimated 9.8 million people in the U.S. states of Illinois, Wisconsin, and Indiana. Chicago is the county seat of Cook County, the second most populous county in the United States.
Chicago was incorporated as a town in 1833, near a portage between the Great Lakes and the Mississippi River watershed.Today, the city retains its status as a major hub for industry, telecommunications and infrastructure, with O'Hare International Airport being the second busiest airport in the world in terms of traffic movements. In 2008, the city hosted 45.6 million domestic and overseas visitors. Among metropolitan areas, the Chicago area has the 4th largest Gross Domestic Product (GDP) in the world.
Chicago is an important worldwide center of commerce. The city has the second largest financial center in the United States. The world cities study group at Loughborough University recognized Chicago among its leading group of cities. Chicago was named by The Atlantic as the world's 4th most economically powerful city,. Chicago is a stronghold of the Democratic Party and has been home to many influential politicians, including the current President of the United States, Barack Obama.
The city's notoriety expressed in popular culture is found in novels, plays, movies, songs, various types of journals (for example, sports, entertainment, business, trade, and academic), and the news media. Chicago has numerous nicknames, which reflect the impressions and opinions about historical and contemporary Chicago. The best known include: "Chi-town," "Windy City," "Second City,"[footnote 1] and the "City of Big Shoulders."[footnote 2] Chicago has also been called "the most American city" in the United States.

History

During the mid-18th century, the area was inhabited by a Native American tribe known as the Potawatomi, who had taken the place of the Miami and Sauk and Fox peoples. The 1780s saw the arrival of the first known non-indigenous permanent settler in Chicago, Jean Baptiste Point du Sable, who is believed to be of African and European (French) descent.In 1795, following the Northwest Indian War, an area that was to be part of Chicago was turned over by some Native Americans in the Treaty of Greenville to the United States for a military post.

In 1803, the United States Army built Fort Dearborn, which was destroyed in the War of 1812, Battle of Fort Dearborn. The Ottawa, Ojibwe, and Potawatomi had ceded additional land to the United States in the 1804 Treaty of St. Louis. The Potawatomi were eventually forcibly removed from their land following the Treaty of Chicago in 1833. On August 12, 1833, the Town of Chicago was organized with a population of around 200 at that time. Within seven years it would grow to a population of over 4,000. On the 15th day of June, 1835, the first public land sales commenced with Edmund Dick Taylor as U. S. receiver of public moneys. The City of Chicago was incorporated on Saturday, March 4, 1837.

The name "Chicago" is derived from a French rendering of the Native American word shikaakwa, translated as "wild onion" or "wild garlic," from the Miami-Illinois language. The first known reference to the site of the current city of Chicago as "Checagou" was by Robert de LaSalle around 1679 in a memoir written about the time.The wild garlic plants, Allium tricoccum, were described by LaSalle's comrade, naturalist-diarist Henri Joutel, in his journal of LaSalle's last expedition.

State and Madison Streets, the busiest corner in Chicago (1897)

As the site of the Chicago Portage, the city emerged as an important transportation hub between the eastern and western United States. Chicago's first railway, Galena and Chicago Union Railroad, opened in 1848, which also marked the opening of the Illinois and Michigan Canal. The canal allowed steamboats and sailing ships on the Great Lakes to connect to the Mississippi River. A flourishing economy brought residents from rural communities and immigrants abroad. Manufacturing and retail sectors became dominant among Midwestern cities, influencing the American economy, particularly in meatpacking, with the advent of the refrigerated rail car and the regional centrality of the city's Union Stock Yards.

In the 1850s Chicago gained national political prominence as the home of Senator Stephen Douglas, the champion of the Kansas-Nebraska Act and "popular sovereignty" approach to the issue of the spread of slavery. These issues also helped propel another Illinoisan, Abraham Lincoln, to the national stage. Lincoln was nominated in Chicago for the nation's presidency at the 1860 Republican National Convention and went on to defeat Douglas in the general election, setting the stage for the American Civil War. History would later view Lincoln as one of the nation's most admired and beloved presidents.

Chicago experienced the fastest population growth in the world at one point, thus the city initiated infrastructure improvements. In February 1856, the Chesbrough plan for the building of Chicago's and the United States' first comprehensive sewerage system was approved by the Common Council.The project raised much of central Chicago to a new grade. While raising Chicago, and at first improving the health of the city, the untreated sewage and industrial waste now flowed into the Chicago River, then into Lake Michigan, polluting the primary source of fresh water for the city. Chicago responded by tunneling two miles (3 km) out into Lake Michigan to newly built water cribs. In 1900, the problem of sewage was largely resolved when the city undertook a major engineering feat. The city reversed the flow of the Chicago River so that the water flowed from Lake Michigan into the river, instead of flowing from the river into the lake. It began with the construction and improvement of the Illinois and Michigan Canal, and completed with the Chicago Sanitary and Ship Canal leading to the Illinois River which joins the Mississippi River.

Artist's rendering of the Great Chicago Fire of 1871

After the Great Chicago Fire of 1871 destroyed a third of the city, including the entire central business district, Chicago experienced rapid rebuilding and growth. During its rebuilding period, Chicago constructed the world's first skyscraper in 1885, using steel-skeleton construction. Labor conflicts and unrest followed, including the Haymarket affair on May 4, 1886. Concern for social problems among Chicago's lower classes led Jane Addams to be a co-founder of Hull House in 1889. Programs developed there became a model for the new field of social work.

During the 1870s and 1880s, Chicago and the state of Illinois together attained national stature as leaders in the movement to improve public health. City and state laws that upgraded standards for the medical profession and fought urban epidemics of cholera, small pox and yellow fever were not only passed, but also enforced. These in turn became templates for public health reform in many other states. The city invested in many large, well-landscaped municipal parks, which also included public sanitation facilities. The chief advocate and driving force for improving public health in Chicago was Dr. John H. Rauch, M.D., who established a plan for Chicago's park system in 1866, created Lincoln Park by closing a cemetery filled with festering, shallow graves, and helped establish a new Chicago Board of Health in 1867 in response to an outbreak of cholera. Ten years later he became the secretary and then the president of the first Illinois State Board of Health, which carried out most of its activities in Chicago.

In the 19th century, Chicago became the nation's railroad center and in 1883 the standardized system of North American Time Zones was adopted by the general time convention of railway managers in Chicago. This gave the continent its uniform system for telling time.

In 1893, Chicago hosted the World's Columbian Exposition on former marshland at the present location of Jackson Park. The Exposition drew 27.5 million visitors, and is considered the most influential world's fair in history. The University of Chicago was founded in 1892 on the same South Side location. The term "midway" for a fair or carnival referred originally to the Midway Plaisance, a strip of park land that still runs through the University of Chicago campus and connects Washington and Jackson Parks.

Unemployed men outside a soup kitchen opened in Chicago by Al Capone (1931)

Chicago's flourishing economy attracted huge numbers of new immigrants from Europe and migrants from the eastern states. Of the total population in 1900 not less than 77.4% were foreign-born, or born in the United States of foreign parentage. Germans, Irish, Poles, Swedes and Czechs made up nearly two-thirds of the foreign-born population.

Geography

Chicago is located in northeastern Illinois at the southwestern tip of Lake Michigan. It is the principal city in Chicago Metropolitan Area situated in the Midwestern United States and the Great Lakes region. Chicago rests on a continental divide at the site of the Chicago Portage, connecting the Mississippi River and the Great Lakes watersheds. The city lies beside freshwater Lake Michigan, and two rivers—the Chicago River in downtown and the Calumet River in the industrial far South Side—flow entirely or partially through Chicago. The Chicago Sanitary and Ship Canal connects the Chicago River with the Des Plaines River, which runs to the west of the city. Chicago's history and economy are closely tied to its proximity to Lake Michigan. While the Chicago River historically handled much of the region's waterborne cargo, today's huge lake freighters use the city's Lake Calumet Harbor on the South Side. The lake also provides another positive effect, moderating Chicago's climate; making waterfront neighborhoods slightly warmer in winter and cooler in summer.

When Chicago was founded in 1833, most of the early building began around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks.[45] The overall grade of the city's central, built-up areas, is relatively consistent with the natural flatness of its overall natural geography, generally exhibiting only slight differentiation otherwise. The average land elevation is 579 ft (176 m) above sea level. The lowest points are along the lake shore at 577 ft (176 m), while the highest point, at 735 ft (224 m), is a landfill located in the Hegewisch community area on the city's far south side.

Chicago Half Marathon on Lake Shore Drive next to Burnham Park in the South Side

The Chicago Loop is the central business district but Chicago is also a city of neighborhoods. Lake Shore Drive runs adjacent to a large portion of Chicago's lakefront. Some of the parks along the waterfront include Lincoln Park, Grant Park, Burnham Park and Jackson Park. 29 public beaches are also found along the shore. Landfill extends into portions of the lake providing space for Navy Pier, Northerly Island, the Museum Campus, and large portions of the McCormick Place Convention Center. Most of the city's high-rise commercial and residential buildings can be found close to the waterfront.

An informal name for the Chicago metropolitan area is Chicagoland, used primarily by copywriters, advertising agencies, and traffic reporters. There is no precise definition for the term "Chicagoland," but it generally means the city and its suburbs together. The Chicago Tribune, which coined the term, includes the city of Chicago, the rest of Cook County, eight nearby Illinois counties: Lake, McHenry, DuPage, Kane, Kendall, Grundy, Will and Kankakee, and three counties in Indiana: Lake, Porter and LaPorte.[46] The Illinois Department of Tourism defines Chicagoland as Cook County without the city of Chicago, and only Lake, DuPage, Kane and Will counties.

 The Chicagoland Chamber of Commerce defines it as all of Cook and DuPage, Kane, Lake, McHenry and Will counties

Climate

The city lies within the humid continental climate zone, and experiences four distinct seasons. Summers are hot and humid, with a July daily average of 84.7 °F (29.3 °C). In a normal summer, temperatures exceed 90 °F (32 °C) on 21 days.[49] Winters are cold, snowy, and windy, with some sunny days, and with a January average of 23.5 °F (−4.7 °C). Temperatures often (43 days) stay below freezing for an entire day, and lows below 0 °F (−18 °C) occur on eight nights per year.[49] Spring and fall are mild seasons with low humidity.

According to the National Weather Service, Chicago's highest official temperature reading of 107 °F (42 °C) was recorded on June 1, 1934 and July 11, 1936, both at Midway Airport. The lowest temperature of −27 °F (−33 °C) was recorded on January 20, 1985,[49] at O'Hare Airport. The city can experience extreme winter cold spells that may last for several consecutive days.