Killing Heidi is an Australian rock band formed in Violet Town, Victoria in 1996, initially as a folk-pop duo by siblings, Ella and Jesse Hooper.
 The band have released three studio albums, "Reflector" (March 2000), which reached No. 1 on the ARIA Albums Chart, "Present" (October 2002) and "Killing Heidi" (August 2004).
 Their top 20 singles are "Weir" (October 1999), "Mascara" (November, No. 1 on ARIA Singles Chart), "Live Without It" (April 2000), "Outside of Me" (September 2002) and "I Am" (July 2004).
 At the ARIA Music Awards of 2000 they were nominated in seven categories and won four trophies: Album of the Year, Best Group, Breakthrough Artist – Album and Best Rock Album for "Reflector".
 At the APRA Music Awards of 2001 Ella and Jesse Hooper won Songwriter of the Year.
 The group disbanded in 2006, with Ella and Jesse taking a lower profile with an acoustic folk duo, The Verses.
 Ella also has a career as a solo performer, radio presenter and TV personality.
 Jesse has a career as a music teacher, producer and community arts developer.
 In 2016, it was announced that the band would be reforming to celebrate its 20th anniversary.
Tournament Park is a park and athletics venue in Pasadena, California, currently maintained by the California Institute of Technology.
 It was simply known as the "town lot" before being renamed Tournament Park in 1900.
 Tournament Park gets its name from the Tournament of Roses, and it served as a venue in the early 20th century for events associated with the Tournament, such as chariot races, ostrich races, and even a race between a camel and an elephant.
 It is best known for being the site of the first Rose Bowl Game in 1902, and the second to eighth Rose Bowl Games from 1916 to 1922 before the Rose Bowl opened in 1923.
 Its capacity at the time was 43,000 people, many of which were in temporary wooden bleachers that the city deemed unsafe, thus necessitating the construction of the Rose Bowl.
 Besides hosting Tournament of Roses events, the venue also hosted the Southern California Horse Show Association's annual horse show in the early 20th century.
 Tournament Park hosted a handful of USC football games in the 1910s and 1920s prior to the construction of Los Angeles Memorial Coliseum
Saltwood Castle is a castle in Saltwood village, one mile (2 km) north of Hythe, Kent, England.
 Of 11th century origin, the castle was expanded in the 13th and 14th centuries.
 After the Norman Conquest, the castle was appropriated by the Archbishop of Canterbury Lanfranc and remained the property of the archbishops, with some interruptions, until 1540, when Thomas Cranmer was compelled to cede it to Henry VIII.
 The castle is reputed to have been the meeting place of the four knights who carried out the assassination of Thomas Becket in 1170.
 By the 19th century, it was "largely ruinous" and restorations to make portions of the castle habitable were carried out in the 1880s and 1930s.
 In the late 19th century, the castle was bought by an ancestor of Bill Deedes, the journalist and politician, who grew up there.
 In the 20th century, it was sold to Sir Martin Conway who commissioned Philip Tilden to undertake a restoration.
 In 1953, the castle was bought by the art historian Kenneth Clark (1903–1983), and then became the home of his son, the politician and diarist, Alan Clark (1928–1999).
 It remains the private home of his widow, Jane Clark.
 The castle is a Grade I listed building.
Kenneth Young (born 11 November 1955, Invercargill, New Zealand) is a composer, conductor, radio presenter and lecturer in composition, conducting and orchestration at the New Zealand School of Music, Massey University and Victoria University of Wellington.
 As a composer, Young has had works commissioned by New Zealand and Australian orchestras and arts organisations including the New Zealand Symphony Orchestra, Auckland Philharmonia Orchestra, Tasmanian Symphony Orchestra "New Zealand International Arts Festival" and "Chamber Music New Zealand".
 He works as a freelance composer and is fully represented by "SOUNZ: The Centre for New Zealand Music".
 In 1976, Young became the principal tuba for the New Zealand Symphony Orchestra and first the orchestra in 1985 becoming "Conductor in Residence" in 1993.
 In 2001 resigned from the orchestra to become a full-time conductor, composer and recording artist for orchestras in New Zealand and Australia, as well as engagements in Japan and the United Kingdom.
 He is well known for his interpretation of Romantic, 20th Century, New Zealand and Australian orchestral repertoire and in 2012 conducted both the winning album, "Angel at Ahipara" and finalist album, "Releasing the Angel", for "Best Classical Album" at the New Zealand Music Awards.
 Young has been recorded by EMI, Atoll Records, Continuum, Trust Records, ABC Classics and Naxos and is a frequent presenter on "RESOUND", Radio New Zealand Concert introducing and contextualising work from the RNZ archives.
 In 2004 was awarded the "Lilburn Trust Citation" in Recognition of Outstanding Services to New Zealand Music.
Karl Paul Reinhold Niebuhr ( ; June 21, 1892June 1, 1971) was an American theologian, ethicist, commentator on politics and public affairs, and professor at Union Theological Seminary for more than 30 years.
 Niebuhr was one of America's leading public intellectuals for several decades of the 20th century and received the Presidential Medal of Freedom in 1964.
 A public theologian, he wrote and spoke frequently about the intersection of religion, politics, and public policy, with his most influential books including "Moral Man and Immoral Society" and "The Nature and Destiny of Man", the second of which Modern Library ranked one of the top 20 nonfiction books of the twentieth century.
 Andrew Bacevich labelled Niebuhr's book "The Irony of American History" "the most important book ever written on U.S. foreign policy."
 Historian Arthur Schlesinger Jr. described Niebuhr as "the most influential American theologian of the 20th century" and "Time" posthumously called Niebuhr "the greatest Protestant theologian in America since Jonathan Edwards."
Peter Snow, CBE (born 20 April 1938) is a British radio and television presenter and historian, best known as an analyst of election results.
 He presented the 2016 BBC series, "Trainspotting Live", along with co-presenters Dr Hannah Fry and Dick Strawbridge.
Dominique Kalifa is a French historian, professor at the University of Paris 1 Pantheon-Sorbonne, where he is director of the Centre of 19th Century History and member of the Institut Universitaire de France.
 A student of Michelle Perrot, he specialises in the history of crime, transgression, social control, and mass culture in 19th and early 20th France and Europe.
 He also teaches at the Institut d'Etudes Politiques de Paris (Sciences Po) from 2008 and reviews for the French newspaper "Libération".
 His last book was devoted to the underworld and its role in the Western imagination.
 He is currently working on a new project about the concept of ""Belle Epoque"" and the ways 20th century France has represented the turn of the century.
Miodrag B. Protić (Serbian Cyrillic: Миодраг Б.
 Протић) (Vrnjačka Banja, 10 May 1922 – Belgrad, 20 December 2014) was one of the most popular Serbian painters of the second half of the 20th century, art critic, theorist and historian of art of the 20th century in Serbia and Yugoslavia.
20th Century Battlefields is a BBC documentary television series hosted by television and radio personality Peter Snow, and his son Dan Snow.
Sămănătorul or Semănătorul (] , Romanian for "The Sower") was a literary and political magazine published in Romania between 1901 and 1910.
 Founded by poets Alexandru Vlahuță and George Coșbuc, it is primarily remembered as a tribune for early 20th century traditionalism, neoromanticism and ethnic nationalism.
 The magazine's ideology, commonly known as "Sămănătorism" or "Semănătorism", was articulated after 1905, when historian and literary theorist Nicolae Iorga became editor in chief.
 While its populism, critique of capitalism and emphasis on peasant society separated it from other conservative groups, "Sămănătorul" shared views with its main conservative predecessor, the "Junimea" society, particularly in expressing reserve toward Westernization.
 In parallel, its right-wing agenda made it stand in contrast to the Poporanists, a Romanian populist faction whose socialist-inspired ideology also opposed rapid urbanization, but there was a significant overlap in membership between the two groups.
 "Sămănătorul"' s relationship with the dominant National Liberal Party was equally ambiguous, ranging from an alliance between "Sămănătorul" and National Liberal politician Spiru Haret to Iorga's explicit condemnation of 20th century Romanian liberalism.

Question: 20th Century Battlefields was hosted by the radio presenter and historian of what nationality?
Answer: British