The left–right political spectrum is a system of classifying political positions, ideologies and parties, with emphasis placed upon issues of social equality and social hierarchy. In addition to positions on the left and on the right, there are centrist and moderate positions, which are not strongly aligned with either end of the spectrum. On this type of political spectrum, left-wing politics and right-wing politics are often presented as opposed, although a particular individual or group may take a left-wing stance on one matter and a right-wing stance on another; and some stances may overlap and be considered either left-wing or right-wing depending on the ideology. In France, where the terms originated, the left has been called "the party of movement" or liberal, and the right "the party of order" or conservative. Some modern methods of mapping the political spectrum confine left and right to economic policy on the x-axis and use the y-axis for social policy (libertarian and authoritarian). The terms "left" and "right" first appeared during the French Revolution of 1789 when members of the National Assembly divided into supporters of the Ancien Regime to the president's right and supporters of the revolution to his left. One deputy, the Baron de Gauville, explained: "We began to recognize each other: those who were loyal to religion and the king took up positions to the right of the chair so as to avoid the shouts, oaths, and indecencies that enjoyed free rein in the opposing camp". Various "legislative assemblies" divided themselves during the Revolution, where members with "authoritarian, anti-democratic, or anti-socialist views" sat to the right of the chamber, and those with "liberal, democratic, or [other] egalitarian views" sat on the left. When the National Assembly was replaced in 1791 by a Legislative Assembly composed of entirely new members, the divisions continued. "Innovators" sat on the left, "moderates" gathered in the centre, while the "conscientious defenders of the constitution" found themselves sitting on the right, where the defenders of the Ancien Régime had previously gathered.
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