Phoenician sailors building a pontoon bridge across the Hellespont for Xerxes I of Persia enabling him to invade Greece, circa 480 BC
Caption:
Phoenician sailors building a pontoon bridge across the Hellespont for Xerxes I of Persia enabling him to invade Greece, c. 480 BC. From Hutchinson's History of the Nations, published 1915.
Credit:
Album / Universal Images Group / Universal History Archive