Final answer:
Lord Byron gained instant fame as a poet through his narrative poem 'Childe Harold's Pilgrimage,' which was inspired by his travels in Europe and the Near East.
Step-by-step explanation:
Inspired by his adventures in Europe and the Near East, Lord Byron wrote “Childe Harold’s Pilgrimage”, a lengthy narrative poem that brought him instant fame as a poet. Byron's colorful personal life and the vivid depiction of his travels in his work captivated the English public. His enchanting and sometimes controversial romantic exploits, coupled with his support for various causes and his own self-imposed exile, contributed to the celebrity status he enjoyed during his lifetime. The poem, with its rich descriptions of foreign lands and reflective musings, helped to shape the literary movement known as Romanticism.