had imperilled
Past perfect conjugation of imperil. There are other translations for this conjugation.

imperil

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He concluded with an appeal to the international community to help his country with its clean-up drive following an ecological disaster in southern Philippines, where an oil spill had imperilled marine life and created health hazards for the local people.
Concluye con un llamamiento a la comunidad internacional para que ayude a su país en sus esfuerzos de limpieza tras un desastre ecológico ocurrido en Filipinas meridional donde un derramamiento de petróleo ha puesto en peligro la vida marina y la salud de los habitantes locales.
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