Final answer:
The reference to the Colossus of Rhodes sets up a contrast in the poem, indicating a shift from aggressive dominion to a more welcoming or enlightening presence.
Step-by-step explanation:
The allusion to the Colossus of Rhodes in lines 1-2 of the poem serves to highlight a contrast between the ancient statue, symbolizing dominance and military strength, and the subject of the poem, which may represent a different set of values, such as welcome or enlightenment. The Colossus was a symbol of conquest, standing with legs apart, signifying control over the lands around it. Contrasting this image with the poem’s subject provides a nuanced perspective on power and influence, suggesting perhaps a more benevolent or accepting force.