* 1788 – American Pioneers to the Northwest Territory arrive at the confluence of the Ohio and Muskingum rivers, establishing Marietta, Ohio, as the first permanent American settlement of the new United States in the Northwest Territory, and opening the westward expansion of the new country.

* 1787 – The Continental Congress enacts the Northwest Ordinance establishing governing rules for the Northwest Territory.

It created the Northwest Territory in 1783, as a federally supervised territory from which new states would be developed and admitted to the union.

Britain also armed Indian tribes in the Northwest Territory and encouraged them to attack settlers, even though Britain had ceded this territory to the United States by treaties in 1783 and 1794.

* 1870 – Rupert's Land and the North-Western Territory are transferred to Canada from the Hudson's Bay Company, and the province of Manitoba and the Northwest Territories are established from these vast territories.

During the 19th century, the river was the southern boundary of the Northwest Territory.

Map of the Northwest Territory as established by the U. S. Congress in the Northwest Ordinance, shown with present-day state borders, and correct spatial relationship between Lakes Michigan and Erie.

In 1787, the Congress of the Confederation enacted the Northwest Ordinance, which created the Northwest Territory in what is now the upper Midwestern United States.

Ohio would thus be granted access to most or all of the Lake Erie shoreline west of Pennsylvania, and any other new states carved out of the Northwest Territory would have access to the Great Lakes via Lakes Michigan, Huron, and Superior.

When Congress created the Michigan Territory in 1805, it used the Northwest Ordinance's language to define the southern boundary, which therefore differed from that in Ohio's state constitution.

* July 13 – The U. S. Congress enacts the Northwest Ordinance establishing governing rules for the Northwest Territory.

* Fort Washington, Cincinnati, Ohio, is built to protect early U. S. settlements in the Northwest Territory.

* Britain agrees to evacuate border forts in the Northwest Territory ( roughly the area north of the Ohio River and east of the Mississippi ) and thereby end British support for the Indians.

* September 23 – The Lewis and Clark Expedition reaches St. Louis, Missouri, ending a successful exploration of the Louisiana Territory and the Pacific Northwest.

This Act increased the number of seats in the Canadian Senate from 102 to 104, and it allocated one seat to the Yukon Territory and one to the Northwest Territories.

This ordinance accepted the abolishment of all claims to the land west of Pennsylvania and north of the Ohio River by the states of Pennsylvania, Virginia, New York, Connecticut, and Massachusetts, and the ordinance established Federal control over all of this land in the Northwest Territory — with the goal that several new states should be created there.

This status was renewed and reinforced by the Quebec Act of 1774, which expanded Quebec's territory to include part of the Indian Reserve to the west ( i. e., parts of southern Ontario ), and other western territories south of the Great Lakes including much of what would become the United States ' Northwest Territory, including the modern states: Illinois, Indiana, Michigan, Ohio, Wisconsin and parts of Minnesota.

Many other battles were fought in American territory bordering Upper Canada, including the Northwest Territory ( most in modern day Michigan ), upstate New York and naval battles in the Great Lakes.

U. S. orchestras that have gone into Chapter 11 bankruptcy includes the Philadelphia Orchestra ( in April 2011 ), and the Louisville Orchestra, in December 2010 ; orchestras that have gone into Chapter 7 bankruptcy and have ceased operations include the Northwest Chamber Orchestra in 2006, the Honolulu Orchestra in March 2011, the New Mexico Symphony in April 2011, and the Syracuse Symphony in June 2011.

** Republic Airlines ( 1979-1986 ), a defunct airline purchased by Northwest Airlines that ceased operating in 1986

Along with the District of Keewatin and the District of Mackenzie, it was one of the three districts of the old Northwest Territories before the formation of Nunavut in 1999, at which point the district ceased to exist, although as an administrative district of the NWT it had ceased to function several years prior to the splitting off of Nunavut.

* Northwest Airlines, a former major airline purchased by Delta Air Lines that ceased operating in 2009

When Northwest Explorations Inc. was taken over in 1998 by CGX Resources Inc. to form the oil and gas exploration company CGX Energy Inc., McIntyre ceased being a director.

In some regions, including the Pacific Northwest United States, Canada, and Alaska, AMC Eagles are still abundant and in service and available for sale after over 20 years since production ceased.

The district ceased being an independent territory in 1905 and was returned to the Northwest Territories.

Along with the District of Keewatin and the District of Franklin, it was one of the last remaining districts of the old Northwest Territories before the formation of Nunavut Territory in 1999, at which point it ceased to exist.

The District of Ungava was a regional administrative district of Canada's Northwest Territories from 1895 to 1920, although it effectively ceased operation in 1912.

The almost entirely uninhabited offshore islands of Ungava ( over 1500 of them ) were not officially transferred to the District of Franklin in the Northwest Territories until 1920, at which point the District of Ungava ( which had not functioned in any administrative capacity for eight years ) formally ceased to exist.

The electoral district ceased to exist at the drop of the writ for the 1888 Northwest Territories general election.

Seven years later, on January 1, 1991, Pacific Northwest Bell ceased to exist when it was merged into Mountain Bell, which was renamed U S WEST Communications the same day.

Vancouver determined that the Northwest Passage did not exist at the latitudes that had long been suggested.

In the U. S., there are Zimbabwean marimba bands in particularly high concentration in the Pacific Northwest, Colorado, and New Mexico, but bands exist from the East Coast through California and even to Hawaii and Alaska.

Since they are made of cedar, which decays eventually in the rainforest environment of the Northwest Coast, few examples of poles carved before 1900 exist.

Satellite locations also exist at Northwest High School, Little Elm High School, and Graham Education & Workforce Center.

Strong rivalries also exist between WSU and the other Pac-12 teams of the Pacific Northwest: the University of Oregon Ducks and Oregon State University Beavers.

This advice included suggested patronage appointments, one of which was an unimplemented proposal that Arthur himself be appointed chief justice of the Northwest Territories ( a position that did not at the time exist ).

Luwian hieroglyphic texts contain a limited number of lexical borrowings from Hittite, Akkadian, and Northwest Semitic ; the lexical borrowings from Greek are limited to proper nouns, although common nouns borrowed in the opposite direction do exist.

The plants are slow growing and take many years to reach seed bearing maturity, and predominately exist in dense, moist, old growth conifer forests in the Pacific Northwest.

Scattered fisher populations now exist in the Pacific Northwest, mostly the result of reintroductions by government agency partnerships with timber companies who wanted to re-introduce fishers to decrease Porcupine ( Erethizon dorsatum ) damage to their conifer plantations.

After the province of Saskatchewan split from the Northwest Territories in 1905, Whitewood continued to exist as a district in Saskatchewan until 1908.

After the province of Alberta split from the Northwest Territories in 1905, Wetaskiwin would continue to exist as a district until 1971.

Strathcona was a territorial electoral district in the Northwest Territories from 1902-1905, after 1905 Alberta split from the territories, the Strathcona district continues to exist to present day.