Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile Delta and the river valleys of the Tigris and Euphrates.
that flurished at the same time as the civilizations
that had flourished at the same time as had the civilizations
that flourished at the same time those had
flourishing at the same time as those did
flourishing at the same time as those were
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source: OG12 #85