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had proliferated

  • past perfect
    of proliferate.
    proliferate
    verb (used with or without object)
    to grow or produce by multiplication of parts, as in budding or cell division, or by procreation.

Example Sentences

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Non-native grasslands had proliferated after the closing of the sugar and pineapple fields, but many thinly walled wooden plantation homes still stood.

From Salon Aug. 18, 2023

Agriculture Department had concluded that grasshoppers had proliferated to the level deemed a severe outbreak and would not only consume grasses essential to grazing cattle but also would pose a threat to the ecosystem.

From Seattle Times Jul. 1, 2023

Many companies had taken big positions in highly leveraged mortgage bonds that had proliferated in previous years.

From Reuters Mar. 25, 2023

The platform also co-operated with EU crime agency Europol in 2019 to eliminate a huge amount of Islamic State content that had proliferated on the platform.

From BBC Feb. 15, 2022

The rear garden was a tangled jungle in which every type of plant and flower had proliferated and where Clara’s birds kept up a steady din, along with many generations of cats and dogs.

From "The House of the Spirits: A Novel" by Isabel Allende