英文文法,幫忙解說一下,謝謝!!

Avian influenza has flared anew in recent weeks, spreading quickly among birds in Europe and parts of Africa,prompting authorities to impose bans on poultry trade, mass culling in infected areas and vaccinations of poultry flocks.

這一個段落用了哪些文法??越詳細越好喔!!謝謝!!
Update: 有哪位大大可以幫幫我ㄚ???!!
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