The Last Kingdom, based on Bernard Cornwell's novel series The Saxon Stories, wrapped up its story after five seasons and the movie Seven Kings Must Die, but several big questions remain after the series' conclusion. The Last Kingdom has become one of Netflix's most popular series since it was acquired from the BBC in 2018. Following the adventures of its protagonist, Uhtred of Bebbanburg, The Last Kingdom provides a fictional, but highly feasible, retelling of the formation of England as a single unified Kingdom.
https://screenrant.com/the-last-kingdom-show-movies-biggest-questions-unanswered/