Ottawa is a city located at the confluence of the Illinois River and Fox River in LaSalle County, Illinois, USA. As of the 2010 census, the city population was 18,786. It is the county seat of LaSalle County and it is part of the Ottawa-Streator Micropolitan Statistical Area, which was the 259th-most populous area in the United States in 2007.

Ottawa was the site of the first of the Lincoln-Douglas debates of 1858. During the Ottawa debate Stephen A. Douglas, leader of the Democratic Party, openly accused Abraham Lincoln of forming a secret bipartisan group of Congressmen to bring about the abolition of slavery.

The John Hossack House was a "station" on the Underground Railroad; Ottawa being a major stop, because of its rail, road and river transportation. Citizens in the city were active within the abolitionist movement. Ottawa was the site of a famous 1859 abduction of a runaway slave named Jim Gray, from a courthouse by prominent civic leaders of the time. Three of the civic leaders, John Hossack, Dr. Joseph Stout and James Stout, later stood trial in Chicago for violating the Fugitive Slave Law of 1850.

Ottawa (ⁱ/ˈɒtəwɑː/ or /ˈɒtəwə/) is the capital of Canada. It is the second largest city in Ontario and the fourth largest city in the country. The city is located on the south bank of the Ottawa River in the eastern portion of Southern Ontario. Ottawa borders Gatineau, Quebec, located on the north bank of the Ottawa River; together they form the National Capital Region (NCR).

Founded in 1826 as Bytown and incorporated as "Ottawa" in 1855, the city has evolved into a political and technological centre of Canada. Its original boundaries were expanded through numerous minor annexations and ultimately replaced by a new city incorporation and major amalgamation in 2001 which significantly increased its land area. The name "Ottawa" is derived from the Algonquin word adawe, meaning "to trade". Initially an Irish and French Christian settlement, Ottawa has become a multicultural city with a diverse population.

The 2011 census had the city's population as 883,391, and the metropolitan population as 1,236,324.Mercer ranks Ottawa with the second highest quality of living of any large city in the Americas, and 14th highest in the world. It is also rated the second cleanest city in Canada, and third cleanest city in the world. In 2012, the city was ranked for the third consecutive year as the best community in Canada to live in by MoneySense.

Illinois (ⁱ/ˌɪlɨˈnɔɪ/ IL-i-NOY) is the 25th most extensive and the 5th most populous of the 50 United States, and is often noted as a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal, timber, and petroleum in the south, Illinois has a broad economic base. Illinois is a major transportation hub. The Port of Chicago connects the state to other global ports from the Great Lakes, via the Saint Lawrence Seaway, to the Atlantic Ocean; as well as the Great Lakes to the Mississippi River, via the Illinois River. For decades, O'Hare International Airport has ranked as one of the world's busiest airports. Illinois has long had a reputation as a bellwether both in social and cultural terms and politics.

Although the state's largest population centers today are in northern Illinois, originally the state's population grew from south to north, with settlers arriving from Kentucky in the 1810s. In 1818, Illinois achieved statehood. Chicago was founded in the 1830s on the banks of the Chicago River, one of the few natural harbors on southern Lake Michigan. Railroads and John Deere's invention of the self-scouring steel plow turned Illinois' rich prairie into some of the world's most productive and valuable farmlands, attracting immigrant farmers from Germany and Sweden. By 1900, the growth of industrial jobs in the northern cities and coal mining in the central and southern areas attracted immigrants from Eastern and Southern Europe. Illinois was an important manufacturing center during both world wars. The Great Migration established a large community of African Americans in Chicago that created the city's famous jazz and blues cultures.