In 1640, Portugal restored its independence from Spain after a protracted conflict known as the Portuguese Restoration War. This event marked the end of the Iberian Union, a dynastic union that had placed Portugal under Spanish rule since 1580. The restoration not only reasserted Portugal's sovereignty but also allowed it to regain control over its vast overseas empire, which was crucial for its economic and cultural identity.

The Portuguese Restoration in 1640 not only revived national pride but also inspired a wave of baroque poetry that celebrated Portugal's maritime history and cultural identity. Poets like Luís de Camões used their works to reflect on the nation's exploits and resilience, weaving themes of exploration and independence into their verses.