French (le français [lə fʁɑ̃sɛ] ( listen) or la langue française [la lɑ̃ɡ fʁɑ̃sɛz]) is a Romance language, belonging to the Indo-European family. It descended from the spoken Latin language of the Roman Empire, as did languages such as Italian, Portuguese, Spanish, Romanian, Catalan and others. Its closest relatives are the other languages d' oïl—languages historically spoken in northern France and in southern Belgium, which French (Francien) has largely supplanted. French was also influenced by native Celtic languages of Northern Roman Gaul like Gallia Belgica and by the (Germanic) Frankish language of the post-Roman Frankish invaders. EDUCATION As of January 2015, the International Schools Consultancy (ISC) listed France as having 105 international schools. ISC defines an 'international school' in the following terms "ISC includes an international school if the school delivers a curriculum to any combination of pre-school, primary or secondary students, wholly or partly in English outside an English-speaking country, or if a school in a country where English is one of the official languages, offers an English-medium curriculum other than the country’s national curriculum and is international in its orientation." This definition is used by publications including The Economist Circulation Each of The Economist' issue's official date range is from Saturday to the following Friday. In the UK print copies are dispatched late Thursday, for Friday delivery to retail outlets and subscribers. Elsewhere, retail outlets and subscribers receive their copies on Friday or Saturday (as of May 2014, Monday in Europe), depending on their location. The Economist posts each week's new content online at approximately 2100 Thursday evening UK time, ahead of the official publication date. In 1877, the newspaper's circulation was 3,700. In 1920, it had risen to 6,000. Circulation increased rapidly after 1945, reaching 100,000 by 1970. HISTORY The Economist was founded by the British businessman and banker James Wilson in 1843, to advance the repeal of the Corn Laws, a system of import tariffs. A prospectus for the "newspaper," from 5 August 1843 enumerated thirteen areas of coverage that its editors wanted the newspaper to focus on.