The area around Calgary was first inhabited by pre-Clovis people with a history dating back about 11,000 years ago, although it was occupied by several people when Europeans arrived, including the Blood, Blackfoot, Peigan and Tsuu T’ina First Nations peoples, all under the Blackfoot Confederacy. The first recorded European in the area was cartographer David Thompson in 1787, although the early settler did not arrive until 1873.
The site became Fort Brisebois, a post for the North-West Mounted Police (now the Royal Canadian Mounted Police), which was assigned to the area in 1875 to protect the fur trade. It was later renamed Fort Calgary in 1876 after Calgary on the Isle of Mull, Scotland.
Calgary became an agricultural and commercial hub beginning in the 1880s when the Canadian Pacific Railway reached the area. In 1996, the railway’s headquarters moved from Montreal to Calgary. In 1894, the city was incorporated as the City of Calgary in what was then the North-West Territories.
Calgary’s population began to increase quickly through 1914 when settlers the world over came to take advantage of the offer for free “homestead” land and thus ranching, and agriculture became an essential part of the economy for many years.
While oil was discovered in Alberta at the beginning of the 20th century, it did not become significant until vast reserves were discovered in 1947, which then put Calgary at the center of an oil boom, which sent the population from 272,000 in 1971 to 675,000 in 1989. The city has since diversified its economy, and its population has continued to grow.