Final answer:
Historical contexts of displacement and exile have significantly influenced literary themes, particularly during periods when forced migrations and societal upheaval were prevalent.
Step-by-step explanation:
Exile and expulsion throughout history have influenced many aspects of literature, especially during times when forced migrations and social upheaval were common. Such experiences often had profound effects on writers, leading to a prevalence of themes of exile in their work. For example, the Roman poet Ovid lamented his own exile in his writings, and during the English Romantic period, poets like Lord Byron and Percy Bysshe Shelley who felt alienated from their homeland also reflected the experience of exile in their poetry. The sense of being an outsider or being sent away can evoke feelings of loneliness and longing, which are powerful emotional anchors in literary works. Thus, knowing about the historical context of displacement helps readers understand why the theme of exile was so prevalent during certain periods.