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A core provinces of a country is a province that is viewed internationally as a legitimate claim of that country. For example Canada's core provinces are Quebec and Ontario.
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Region 7 or the Central Visayas region, has four provinces, namely: Cebu, Bohol, Negros Oriental and Siquijor.
Core provinces, often referred to in various contexts like geography or political discussions, typically derive their names from their central or foundational roles within a larger entity, such as a country or region. The term "core" suggests that these provinces are integral to the identity, economy, or governance of the area. Historically, they may have been the first settled or developed regions, establishing cultural and administrative benchmarks for surrounding areas. The naming reflects their significance in the socio-political landscape.
Region 2 in the Philippines consists of the provinces of Batanes, Cagayan, Isabela, Nueva Vizcaya, and Quirino.
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The core provinces of Canada, which include Ontario and Quebec, feature a varied landscape of landforms. This region contains the Canadian Shield, a large plateau of exposed Precambrian rock, as well as the Great Lakes, the St. Lawrence River, and the Niagara Escarpment. The landscape also includes rolling hills, forests, and fertile farmland.
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The provinces in Region 1 of the Philippines are Ilocos Norte, Ilocos Sur, La Union, and Pangasinan.
The provinces in region 6 (Western Visayas) are Aklan, Antique, Capiz, Guimaras, Iloilo, and Negros Occidental.