premise: Invasion literature is a genre.
hypothesis: Invasion literature ( or the invasion novel ) is a literary genre most notable between 1871 and the First World War ( 1914 ) but still practised to this day . The genre first became recognizable starting in Britain in 1871 with The Battle of Dorking , a fictional account of an invasion of England by Germany . This short story was so popular it started a literary craze for tales that aroused imaginations and anxieties about hypothetical invasions by foreign powers , and by 1914 the genre had amassed a corpus of over 400 books , many best-sellers , and a world-wide audience . The genre was influential in Britain in shaping politics , national policies and popular perceptions in the years leading up to the First World War , and remains a part of popular culture to this day .