H21
H21 or H-21 may refer to: * British NVC community H21, a type of heath community in the British National Vegetation Classification * Highway H21 (Ukraine) * , a Royal Navy H-class submarine * , a Royal Navy S-class destroyer * Mata Hari (1876–1917), German spy code named H-21 * Piasecki H-21, an American helicopter * Institute H21, a Czech think tank that created the website Prezident 21 Prezident 21 is an interactive website, created by the Czech mathematician and political activist Karel Janeček and his think tank, Institute H21, used to familiarise voters with a proposed system to select a presidential candidate for the 2018 Cze ...

Heaths In The British National Vegetation Classification System
This article gives an overview of the heath communities in the British National Vegetation Classification system. Introduction The heath communities of the NVC were described, along with the mire communities, in Volume 2 of ''British Plant Communities'', first published in 1991. In total, 22 heath communities have been identified. The heath communities consist of six separate subgroups: * five lowland dry heath communities, all with distinct, largely non-overlapping distributions in England and Wales ( H1, H2, H6, H8 and H9) * three localised communities, with non-overlapping ranges in southern England, which are considered transitional between the above and the wetter communities classified in the NVC as mires ( H3, H4 and H5) * two maritime heath communities, found exclusively on the coasts of northern and western Britain; one ( H7) is more widespread than the other ( H11) * four submontane heaths from upland areas in northern and western Britain; two of these ( H10 and ...
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Highway H21 (Ukraine)
H21 is an important Ukraine national highway ( H-highway) in the Donetsk Oblast and Luhansk Oblast of Donbas, Ukraine. It connects Donetsk through Luhansk with Starobilsk. The highway runs both, west–east between Donetsk and Luhansk, and south–north between Luhansk and Starobilsk. It passes either through or near Makiivka, Kolosnykove, Khartsyzk, Zuhres; Serdyte, Molodetske, and Shakhtarsk in Shakhtarsky; Torez, Snizhne, Miusynsk, Krasnyi Luch; Ivanivka and Malomykolaivka in Antratsitivsky; Myrne, Uspenka, Lutuhyne, and Heorhiivka in Lutuhynsky; Luhansk; Metalisk, Stukalova Balka, and Lyman-Tsvitni Pisky-Svitle in Slovianoserbsky; Shchastia; Mykhailivka in Troitsky; Novoaidar, Denezhnykove, and Peremorzhne-Shtormove in Novoaidarsky; Shul'hynka in Markivsky, Baidivke, and Polovynkyne in Starobilsky. War in Donbas Significant armed conflict has occurred along and near the H21 during the Russo-Ukrainian War. Main route Main route and connections to/intersections w ...
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Mata Hari
Margaretha Geertruida MacLeod (née Zelle; 7 August 187615 October 1917), better known by the stage name Mata Hari (), was a Dutch exotic dancer and courtesan who was convicted of being a spy for Germany during World War I. She was executed by firing squad in France. The idea of a beautiful exotic dancer using her powers of seduction as a spy made her name synonymous with the ''femme fatale''. Her story has served as an inspiration for many books, films and other works. It has been suggested that she was convicted and condemned because the French Army needed a scapegoat,Howe, Russel Warren (1986). ''Mata Hari: The True Story. New York: Dodd, Mead and Company.'' pp. x–xi, 285. and that the files used to secure her conviction contained several falsifications. Some have even stated that Mata Hari could not have been a spy, and was innocent. Early life Margaretha Geertruida Zelle was born 7 August 1876 in Leeuwarden, Netherlands. She was the eldest of four children to Adam Zelle ...
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British NVC Community H21
British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, the English language as spoken and written in the United Kingdom or, more broadly, throughout the British Isles * Celtic Britons, an ancient ethno-linguistic group * Brittonic languages, a branch of the Insular Celtic language family (formerly called British) ** Common Brittonic, an ancient language Other uses *''Brit(ish)'', a 2018 memoir by Afua Hirsch *People or things associated with: ** Great Britain, an island ** United Kingdom, a sovereign state ** Kingdom of Great Britain (1707–1800) ** United Kingdom of Great Britain and Ireland (1801–1922) See also * Terminology of the British Isles * Alternative names for the British * English (other) * Britannic (other) * British Isles * Brit (other) * Briton (d ...
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Piasecki H-21
The Piasecki H-21 Workhorse/Shawnee is an American helicopter, the fourth of a line of tandem rotor helicopters designed and built by Piasecki Helicopter (later Boeing Vertol). Commonly called "the flying banana", it was a multi-mission helicopter, using wheels, skis and floats. The H-21 was originally developed by Piasecki as an Arctic rescue helicopter. The H-21 had cold-weather features permitting operation at temperatures as low as and could be routinely maintained in severe cold weather environments. Design and development Piasecki Helicopter designed and successfully sold to the United States Navy a series of tandem rotor helicopters, starting with the HRP-1 of 1944. The HRP-1 was nicknamed the "flying banana" because of the upward angle of the aft fuselage, which ensured that the large rotors could not strike the fuselage in any flight attitude. The name was later applied to other Piasecki helicopters of similar design, including the H-21. In 1949, Piasecki proposed ...
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