Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over 9.98 million square kilometres (3.85 million square miles), making it the world's second-largest country by total area. Its southern and western border with the United States, stretching 8,891 kilometres (5,525 mi), is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces and territories and a process of increasing autonomy from the United Kingdom. This widening autonomy was highlighted by the Statute of Westminster 1931 and culminated in the Canada Act 1982, which severed the vestiges of legal dependence on the Parliament of the United Kingdom.
Temperature in Canada varies widely from region to region. Winters can be harsh in many parts of the country, particularly in the interior and Prairie provinces, which experience a continental climate, where daily average temperatures are near −15 °C (5 °F), but can drop below −40 °C (−40 °F) with severe wind chills.In non-coastal regions, snow can cover the ground for almost six months of the year, while in parts of the north snow can persist year-round. Coastal British Columbia has a temperate climate, with a mild and rainy winter. On the east and west coasts, average high temperatures are generally in the low 20s °C (70s °F), while between the coasts, the average summer high temperature ranges from 25 to 30 °C (77 to 86 °F), with temperatures in some interior locations occasionally exceeding 40 °C (104 °F). Much of Northern Canada is covered by ice and permafrost; however, the future of the permafrost is uncertain because the Arctic has been warming at three times the global average as a result of climate change in Canada.Canada's annual average temperature over land has warmed by 1.7 °C (3.1 °F), with changes ranging from 1.1 to 2.3 °C (2.0 to 4.1 °F) in various regions, since 1948.The rate of warming has been higher across the North and in the Prairies.In the southern regions of Canada, air pollution from both Canada and the United States—caused by metal smelting, burning coal to power utilities, and vehicle emissions—has resulted in acid rain, which has severely impacted waterways, forest growth and agricultural productivity in Canada. The following tables show the average maximum and minimum temperatures of Canada of various cities across Canada, based on the climate period from 1981 to 2010 for the months of January and July (generally the lowest and highest average temperature months, but not in every case). The two major Canadian cities that fall outside the continental climate schema are Vancouver and Victoria. Vancouver experiences an oceanic climate, bordering warm-summer mediterranean with a marked summer dry season. Victoria, BC is the only major Canadian city entirely in a warm-summer mediterranean climate. Of the eight largest Canadian cities, Ottawa, Montreal and Toronto have the warmest summers, Winnipeg the coldest winters, while Vancouver's winters are far milder than any other large city in Canada. In mountainous regions such as British Columbia the variety of elevations creates micro-climates with average temperatures that can vary wildly within relatively small distances. A few small towns in southern BC outside of Vancouver, for example, have a humid continental climate (Dfb) with average winter temperatures and cold snaps comparable to other parts of the country. Central Canada and northern Canada experiences subarctic and Arctic climates, much of them arid. Those areas are not heavily populated due to the severe climate, where it drops below −20 °C (−4 °F) on most winter days and has a very brief summer season. Some Mountain passes in southern BC also have a subarctic or subalpine climate, creating extremely dangerous driving conditions, as drivers may be unaware of wintry road conditions when they come from nearby areas like Vancouver and Kamloops that are much warmer.
Canada is famous for the gorgeous scenery and uninhabited land. The views of the untouched and natural environment are breathtaking and composed of beautiful lakes and rivers. There are three oceans, mountains, plains, and some of the most attractive cities in the world, like Toronto.
Canada has a large domestic and foreign tourism industry. The second largest country in the world, Canada's incredible geographical variety is a significant tourist attractor. Much of the country's tourism is centred in the following regions: Toronto, Montreal, Quebec City, Vancouver/Whistler, Niagara Falls, Vancouver Island, Canadian Rockies, British Columbia's Okanagan Valley, Churchill, Manitoba and the national capital region Ottawa. The large cities are known for their culture, diversity, as well as the many national parks and historic sites.
Canada has a varied landscape, with majestic mountains, rolling plains, forested valleys, and beautiful blue rivers and lakes. The Canadian Shield, a hilly region of lakes and swamps, stretches across northern Canada and has some of the oldest rocks on Earth. In Canada's far north lies the frozen Arctic.