Medieval Japan was shaped by its geography as an island nation, leading to a unique feudal system dominated by shoguns, daimyo, and samurai, similar to European feudalism. The samurai adhered to the bushido code, emphasizing honor and loyalty, while the ancient capital of Edo served as the political center with emperors holding little real power. Traditional Shinto beliefs highlighted the warrior culture, with significant contributions to art and literature, including 'The Tale of Genji' by Lady Murasaki Shikibu, recognized as the world's first novel.