premise: Invasion literature was niche genre with a lack of political impact in Britain.
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 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 .