Etymology
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Latvia 
Baltic nation, first independent in 1918, named for its inhabitants, Latvian Latvji, whose ancient name is of unknown origin. In English, the people name was Lett. Parts of the modern state were known previously as Livonia (from Estonian liiv "sand") and Courland (from Curonians, the name of a Lettish people, which is of unknown origin). Related: Latvian.
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Lett (n.)
1831, from German Lette, from Old High German liuti "people" (German Leute), perhaps a German folk-etymologizing of the native name, Latvji (see Latvia). Combining form Letto-. Related: Lettic (1840); Lettish (1794).
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Livonia 
former name of the region around northern Latvia and southern Estonia, also a former Baltic province of Russia, Modern Latin, ultimately from Estonian liiv "sand." Related: Livonian (1650s). The native name in English was Livland.
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