George R.R. Martin is a master of fantasy world-building - so much so that some people are more interested in learning about the history and lore of the Game of Thrones universe than actual historical events. Entire encyclopedias have collected stories from the past generations of Westeros, and some of those tales will inspire the upcoming HBO spinoff. While the adventures of Jon Snow and Daenerys Targaryen may not count as real history homework, it is apparent that Martin’s A Song of Ice and Fire books take heavy cues from events that really happened.
Some of the best Game of Thrones characters are based on historical figures, and some of its grandest battles are practically shot-for-shot remakes of ancient conflicts. It’s true that some of the series’ plot points mirror historical events very closely, but one shouldn’t go looking in textbooks for Season 8 spoilers - George R.R. Martin always manages to twist even his more direct inspirations.