<P> The most populous region is the Saint Lawrence River valley in the south, where the capital, Quebec City, and the largest city, Montreal, are situated . North of Montreal are the Laurentians, a range of ancient mountains, and to the east are the Appalachian Mountains which extends into the Eastern Townships and Gaspésie regions . The Gaspé Peninsula juts into the Gulf of Saint Lawrence to the East . The Saint Lawrence River Valley is a fertile agricultural region, producing dairy products, fruit, vegetables, maple sugar (Quebec is the world's largest producer), and livestock . </P> <P> In 1899, the United States claimed Fox Island under the Guano Islands Act of 1856 . </P> <P> Quebec shares a land border with four northeast states of the United States (Maine, New Hampshire, New York and Vermont) and with three other Canadian provinces (New Brunswick, Ontario and Newfoundland and Labrador). However, as said in the Etymology and boundary changes section, a border dispute remains regarding the ownership of Labrador . The border with Labrador is still not officially recognized by the Quebec Government . A maritime boundary also exists with the territories of Nunavut, Prince Edward Island and Nova Scotia . Quebec has officially more than 12,000 kilometres (7,500 mi) of borders of all types . Half of these are land limits, 12% river limits and 38% marine limits . </P> <P> About a hundred million years ago, the area of southern Quebec was over the New England hotspot, creating the magma intrusions of the Monteregian Hills . These intrusive stocks have been variously interpreted as the feeder intrusions of long extinct volcanoes, which would have been active about 125 million years ago, or as intrusives that never breached the surface in volcanic activity . </P>

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