That she retained her independence so long was due to a double accident: the impregnability of the lagoons and the jealousies of the great powers.
It adds many new features to the shorter form of the story as given by Eusebius, among which is the noteworthy promise of Christ about the impregnability of the city - " Thy city shall be blessed and no enemy shall ever henceforth obtain dominion over it.
Artillery could make little impression upon the massive walls of mud, but at last a breach was effected by mining, and the city was taken by storm, thus losing its general reputation throughout India for impregnability, which had threatened to become a political danger.
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