Québec shares more than 12,000 km of land, river, and marine borders
with Ontario, Canada' government,
Nunavut, Newfoundland and Labrador, Prince Edward Island, New Brunswick,
Nova Scotia, and United States.
Land limits: about 50% of Québec's total perimeter;
River limits: 12%;
Marine limits: 38%.
Québec's borders are of capital importance
because they define its limits, thereby determining the territorial
scope for applying its authority. The bases for Québec territorial
integrity, especially protecting its borders, are provided for in
many constitutional texts.
Implementing a border involves two components:
Delimitation. This consists in defining the path of
the border based on legal texts, which, in Québec, take
the form of British, Canadian, and Québec legislation.
Most of these laws were enacted during the 19th century.
Demarcation. This can be defined as the physical marking
of boundaries generally through the use of markers or other visible