If the World Heritage community ____________ (not campaign) against the expansion of a nearby salt factory, ecosystems _______________ (negatively impact).
hadn't campaigned
would have been negatively impacted
If UNESCO __________ (not provide) technical and financial support after the city was badly damaged in 1991, the Old City of Dubrovnik (Croatia) ___________ (probably still be) on the List of World Heritage in Danger.
hadn't provided
would probably still be
If UNESCO and its partners _________ (not launch) a campaign to restore Temple of Borobudur (INDONESIA) back in 1972, restoration ____________ (not complete) in just eleven years.
hadn't launched
wouldn't have been completed
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