Ontario is the southernmost province of Canada. Located in Central Canada, Ontario is the country's most populous province. As of the 2021 Canadian census, it is home to over 14 million people, which is approximately 38.5% of the country's population. Ontario is the second-largest province by total area, after Quebec, and the fourth-largest jurisdiction of all the Canadian provinces and territories. Ontario's capital is Canada’s most populous city, Toronto. The province is additionally home to the country’s national capital, Ottawa.
Ontario is bordered by the province of Manitoba to the west, Hudson Bay and James Bay to the north, and Quebec to the east and northeast. To the south, it is bordered by the U.S. states of (from west to east) Minnesota, Michigan, Ohio, Pennsylvania (through Lake Erie), and New York. Almost all of Ontario's 2,700-kilometre (1,700 mi) international border with the United States follows rivers and lakes: from the westerly Lake of the Woods, eastward along the major rivers and lakes of the Great Lakes drainage system. There is only about one kilometre (0.62 mi) of actual land border, made up of portages including Height of Land Portage on the Minnesota border in Quetico-Superior Country. Detroit–Windsor, North America's largest and wealthiest transborder agglomeration, connects Ontario to Michigan.
The great majority of Ontario's population and arable land are in Southern Ontario, and while agriculture remains a significant industry, the province's economy depends highly on manufacturing. In contrast, Northern Ontario is sparsely populated with cold winters and heavy forestation, with mining and forestry making up the region's major industries.
Etymology
Ontario is a term thought to have Indigenous origins, either Ontarí:io, a Huron (Wyandot) word meaning "great lake", or possibly skanadario, which means "beautiful water" or "sparkling water" in the Iroquoian languages. Ontario has about 250,000 freshwater lakes. The first mention of the name Ontario was in 1641, when "Ontario" was used to describe the land on the north shore of the easternmost part of the Great Lakes. It was adopted as the official name of the new province at Confederation in 1867.
Geography
The thinly populated Canadian Shield, which dominates the northwestern and central portions of the province, comprises over half the land area of Ontario. Although this area mostly does not support agriculture, it is rich in minerals, partly covered by the Central and Midwestern Canadian Shield forests, and studded with lakes and rivers. Northern Ontario is subdivided into two sub-regions: Northwestern Ontario and Northeastern Ontario.
The virtually unpopulated Hudson Bay Lowlands in the extreme north and northeast are mainly swampy and sparsely forested.
Southern Ontario is further sub-divided into four sub-regions: Central Ontario (although not actually the province's geographic centre), Eastern Ontario, Golden Horseshoe and Southwestern Ontario (parts of which were formerly referred to as Western Ontario).
Despite the rarity of mountainous terrain in the province, there are large areas of uplands, particularly within the Canadian Shield, which traverses the province from northwest to southeast and also above the Niagara Escarpment, which crosses the south. The highest point is Ishpatina Ridge at 693 metres (2,274 feet) above sea level in Temagami, Northeastern Ontario. In the south, elevations of over 500 m (1,640 ft) are surpassed near Collingwood, above the Blue Mountains in the Dundalk Highlands and in hilltops near the Madawaska River in Renfrew County.
The Carolinian forest zone covers most of the southwestern region of the province. The temperate and fertile Great Lakes-Saint Lawrence Valley in the south is part of the Eastern Great Lakes lowland forests ecoregion where the forest has now been largely replaced by agriculture, industrial and urban development. A well-known geographic feature is Niagara Falls, part of the Niagara Escarpment. The Saint Lawrence Seaway allows navigation to and from the Atlantic Ocean as far inland as Thunder Bay in Northwestern Ontario. Northern Ontario covers approximately 87% of the province's surface area; conversely, Southern Ontario contains 94% of the population.
Point Pelee is a peninsula of Lake Erie in southwestern Ontario (near Windsor and Detroit, Michigan) that is the southernmost extent of Canada's mainland. Pelee Island and Middle Island in Lake Erie extend slightly farther. All are south of 42°N – slightly farther south than the northern border of California.
Climate
Ontario's climate varies by season and location. Three air sources affect it: cold, dry, arctic air from the north (dominant factor during the winter months, and for a longer part of the year in far northern Ontario); Pacific polar air crossing in from the western Canadian Prairies/US Northern Plains; and warm, moist air from the Gulf of Mexico and the Atlantic Ocean. The effects of these major air masses on temperature and precipitation depend mainly on latitude, proximity to major bodies of water and to a small extent, terrain relief. In general, most of Ontario's climate is classified as humid continental.
Ontario has three main climatic regions:
- The surrounding Great Lakes greatly influence the climatic region of southern Ontario. During the fall and winter, the release of heat stored by the lakes moderates the climate near the shores which give parts of Southern Ontario not only a later start to winter conditions, but also generally milder winter temperatures than mid-continental areas at lower latitudes. In many areas, warmer spring temperatures are delayed by surrounding colder lake temperatures Parts of Southwestern Ontario and the Hamilton-Niagara region (generally south of a line from Sarnia–Toronto) have a moderate humid continental climate (Köppen climate classification Dfa), similar to the inland Mid-Atlantic states and lower Great Lakes portion of the Midwestern United States. The region has warm to hot, humid summers and cold winters. Annual precipitation ranges from 750–1,000 millimetres (30–39 inches) and is well distributed throughout the year. Most of this region lies in the lee of the Great Lakes, making for abundant snow in some areas. In December 2010, the snowbelt set a new record when it was hit by more than a metre of snow within 48 hours.
- The next climatic region is Central and Eastern Ontario, which has a moderate humid continental climate (Köppen Dfb). This region has warm and sometimes hot summers with colder, longer winters, ample snowfall (even in regions not directly in the snowbelts) and annual precipitation similar to the rest of Southern Ontario.
In the northeastern parts of Ontario, extending south as far as Kirkland Lake, the cold waters of Hudson Bay depress summer temperatures, making it cooler than other locations at similar latitudes. The same is true on the northern shore of Lake Superior, which cools hot, humid air from the south, leading to cooler summer temperatures. Along the eastern shores of Lake Superior and Lake Huron winter temperatures are slightly moderated but come with frequent heavy lake-effect snow squalls that increase seasonal snowfall totals to upwards of 3 m (10 ft) in some places. These regions have higher annual precipitation, in some places over 100 cm (39 in).
- The northernmost parts of Ontario – primarily north of 50°N – have a subarctic climate (Köppen Dfc) with long, severely cold winters and short, cool to warm summers with dramatic temperature changes possible in all seasons. With no major mountain ranges blocking sinking Arctic air masses, temperatures of −40 °C (−40 °F) are not uncommon; snow remains on the ground for sometimes over half the year. Snow accumulation can be high in some areas. Precipitation is generally less than 70 cm (28 in) and peaks in the summer months in the form of rain or thunderstorms.
Severe thunderstorms peak in summer. Windsor, in Southwestern Ontario, has the most lightning strikes per year in Canada, averaging 33 days of thunderstorm activity per year. In a typical year, Ontario averages 11 confirmed tornado touchdowns. Ontario had a record 29 tornadoes in both 2006 and 2009. Tropical depression remnants occasionally bring heavy rains and winds in the south, but are rarely deadly. A notable exception was Hurricane Hazel, which struck Southern Ontario, centred on Toronto, in October 1954.
History
Indigenous habitation (pre–1610)
Paleo-Indians were the first people to settle on the lands of Ontario, about 11,000 years ago, after crossing the Bering land bridge from Asia to North America between 25,000 and 50,000 years ago. During the Archaic period, which lasted from 8000 to 1000 BC, the population slowly increased, with a generally egalitarian hunter-gatherer society and a warmer climate. Trading routes also began emerging along the St. Lawrence River and around the Great Lakes. Hunting and gathering remained predominant throughout the early Woodland period, and social structures and trade continued to develop.
Around 500 AD, corn cultivation began, later expanding to include beans and squash around 1100 AD. Increased agriculture enabled more permanent, fortified, and significantly larger settlements. In southern Ontario during the 1400s, the population of some villages numbered in the thousands, with longhouses that could house over a hundred people. Around this time, large-scale warfare began in southern Ontario, leading to the emergence of Iroquoian groups, including the Neutral Confederacy, Erie and Wendat (Huron). Groups in northern Ontario were primarily Algonquian and included the Ojibwe, who traded with the Iroquois.
Many ethnocultural groups emerged and came to exist on the lands of Ontario: the Algonquins, Mississaugas, Ojibway, Cree, Odawa, Pottowatomi, and Iroquois.
Pays d'en Haut (1610–1763)
In 1608, Samuel de Champlain established France's first colonial settlement in New France, the Habitation de Québec (now Quebec City). French explorers continued to travel west, establishing new villages along the coasts of the Saint Lawrence River. French explorers, the first of which was Étienne Brûlé who explored the Georgian Bay area in 1610–1612, mapped Southern Ontario and named the region Pays d'en Haut ("Upper Country"), in reference to the region being upstream of the Saint Lawrence River. The colony of the Pays d'en Haut was formally established in 1610 as an administrative dependency of Canada, and was for defence and business rather than a settlement colony. The territory of the Pays-d'en-Haut was quite large and includes the present-day province of Ontario, and, in whole or in part, the U.S. states of Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio, Pennsylvania and New York. Indigenous peoples were the vast majority of the Pays d'en Haut population.
As for Northern Ontario, the English explorer Henry Hudson sailed into Hudson Bay in 1611 and claimed its drainage basin for England. The area would become known as Rupert's Land.
De Champlain reached Lake Huron in 1615, and French missionaries, such as the Jésuites and Supliciens, began to establish posts along the Great Lakes. The French allied with most Indigenous groups of Ontario, all for the fur trade and for defence against Iroquois attacks, which was later called the Iroquois Wars). The French would declare their Indigenous allies to be subjects of the King of France and would often act as mediators between different groups. The Iroquois later allied themselves with the British.
From 1634 to 1640, the Huron were devastated by European infectious diseases, such as measles and smallpox, to which they had no immunity. By 1700, the Iroquois had been driven out or left the area that would become Ontario and the Mississaugas of the Ojibwa had settled the north shore of Lake Ontario. The remaining Huron settled north of Quebec City.
During the French and Indian War, the North American theatre of the Seven Years' War of 1754 to 1763, the British defeated the armies of New France and its Indigenous allies. In the Treaty of Paris 1763 France ceded most of its possessions in North America to Britain. Using the Quebec Act, Britain re-organised the territory into the Province of Quebec.
Province of Quebec (1763–1791)
In 1782–1784, 5,000 United Empire Loyalists entered what is now Ontario following the American Revolution. The Kingdom of Great Britain granted them 200 acres (81 ha) land and other items with which to rebuild their lives. The British also set up reserves in Ontario for the Mohawks who had fought for the British and had lost their land in the state of New York. Other Iroquois, also displaced from New York were resettled in 1784 at the Six Nations reserve at the west end of Lake Ontario. The Mississaugas, displaced by European settlements, would later move to Six Nations also.
After the American War of Independence, the first reserves for First Nations were established. These are situated at Six Nations (1784), Tyendinaga (1793) and Akwesasne (1795). Six Nations and Tyendinaga were established by the British for those Indigenous groups who had fought on the side of the British, and were expelled from the new United States. Akwesasne was a pre-existing Mohawk community and its borders were formalized under the 1795 Jay Treaty.
In 1788, while part of the province of Quebec, southern Ontario was divided into four districts: Hesse, Lunenburg, Mecklenburg, and Nassau. In 1792, the four districts were renamed: Hesse became the Western District, Lunenburg became the Eastern District, Mecklenburg became the Midland District, and Nassau became the Home District. Counties were created within the districts.