Samuel de Champlain in the context of "Saint John, New Brunswick"

Explorers are listed below with their common names, countries of origin (modern and former), centuries of activity and main areas of exploration.

The Rideau River (French: Rivière Rideau, Ojibwe: Pasapkedjinawong) is a river in Eastern Ontario, Canada. The river flows north from Upper Rideau Lake and empties into the Ottawa River at the Rideau Falls in Ottawa, Ontario. Its length is 146 kilometres (91 mi).

As explained in a writing by Samuel de Champlain in 1613, the river was given the name "Rideau" (French for 'curtain') because of the appearance of the Rideau Falls. The Anishinàbemowin name for the river is Pasapkedjinawong, 'the river that passes between the rocks'.

Quebec City (French: Ville de Québec) is the capital city of the Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the Census Metropolitan Area (including surrounding communities) had a population of 839,311. It is the twelfth-largest city and the seventh-largest metropolitan area in Canada. It is also the second-largest city in the province, after Montreal. It has a humid continental climate with warm summers coupled with cold and snowy winters.

Explorer Samuel de Champlain founded a French settlement here in 1608, and adopted the Algonquin name. Quebec City is one of the oldest European settlements in North America. The ramparts surrounding Old Quebec (Vieux-Québec) are the only fortified city walls remaining in the Americas north of Mexico. This area was declared a World Heritage Site by UNESCO in 1985 as the "Historic District of Old Québec".

Plattsburgh is a city in and the county seat of Clinton County, New York, United States, situated on the north-western shore of Lake Champlain. The population was 19,841 at the 2020 census. The population of the surrounding (and separately incorporated) Town of Plattsburgh was 11,886 as of the 2020 census, making the combined population of Plattsburgh to be 31,727. Plattsburgh lies just to the northeast of Adirondack Park, immediately outside of the park boundaries. It is the second largest community in the North Country region (after Watertown), and serves as the main commercial hub for the sparsely populated northern Adirondack Mountains. The land around Plattsburgh was previously inhabited by the Iroquois, Western Abenaki, Mohican, and Mohawk people. Samuel de Champlain was the first ever recorded European that sailed into Champlain Valley and later claimed the region as a part of New France in 1609.

Plattsburgh was the site of the amphibious Battle of Plattsburgh in the War of 1812, a key American victory that marked the end of hostilities in the Northern United States. It has been an important military outpost for much of its history, from hosting one of the largest Citizens' Military Training Camps prior to World War I, and Plattsburgh Air Force Base, the east coast center of operations for the Strategic Air Command during much of the Cold War period. The conversion of the base to a civilian airport in the 1990s resulted from the Base Realignment and Closure process during the wind down of the Cold War, and today it serves as a hub for economic development for the region. The city was named one of the Financial Times Top 10 Micro Cities of the Future several times.

Ottawa or Odawa is a dialect of the Ojibwe language spoken by the Odawa people in southern Ontario in Canada, and northern Michigan in the United States. Descendants of migrant Ottawa speakers live in Kansas and Oklahoma. The first recorded meeting of Ottawa speakers and Europeans occurred in 1615 when a party of Ottawas encountered explorer Samuel de Champlain on the north shore of Georgian Bay. Ottawa is written in an alphabetic system using Latin letters, and is known to its speakers as Nishnaabemwin 'speaking the native language' or Daawaamwin 'speaking Ottawa'.

Ottawa is one of the Ojibwe dialects that has undergone the most language change, although it shares many features with other dialects. The most distinctive change is a pervasive pattern of vowel syncope that deletes short vowels in many words, resulting in significant changes in their pronunciation. This and other innovations in pronunciation, in addition to changes in word structure and vocabulary, differentiate Ottawa from other dialects of Ojibwe.