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Classical music is art music produced or rooted in the traditions of Western music, including both liturgical (religious) and secular music. While a similar term is also used to refer to the period from 1750 to 1820 (the Classical period), this article is about the broad span of time from roughly the 11th century to the present day, which includes the Classical period and various other periods. The central norms of this tradition became codified between 1550 and 1900, which is known as the common practice period. The major time divisions of classical music are as follows: the early music period, which includes the Medieval (500–1400) and the Renaissance (1400–1600) eras; the Common practice period, which includes the Baroque (1600–1750), Classical (1750–1820), and Romantic eras (1804–1910); and the 20th century (1901–2000) which includes the modern (1890–1930) that overlaps from the late 19th-century, the high modern (mid 20th-century), and contemporary or postmodern (1975–2015) eras.[citation needed]

What is the period from 1750 to 1820 called?
Answer: the Classical period
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The Estonian literature refers to literature written in the Estonian language (ca. 1 million speakers). The domination of Estonia after the Northern Crusades, from the 13th century to 1918 by Germany, Sweden, and Russia resulted in few early written literary works in the Estonian language. The oldest records of written Estonian date from the 13th century. Originates Livoniae in Chronicle of Henry of Livonia contains Estonian place names, words and fragments of sentences. The Liber Census Daniae (1241) contains Estonian place and family names.

What era contains the oldest records of written Estonia works?
Answer: the 13th century
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The flowering plants (angiosperms), also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants, with about 350,000 species. Like gymnosperms, angiosperms are seed-producing plants; they are distinguished from gymnosperms by characteristics including flowers, endosperm within the seeds, and the production of fruits that contain the seeds. Etymologically, angiosperm means a plant that produces seeds within an enclosure, in other words, a fruiting plant. The term "angiosperm" comes from the Greek composite word (angeion-, "case" or "casing", and sperma, "seed") meaning "enclosed seeds", after the enclosed condition of the seeds.

What is the Greek word for "case" or "casing"?
Answer:
angeion