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What was the first country to declare war, prompting a domino effect of different nations allying togeather?

(great britan and France)

(Serbia)

(Austria-Hungary)

(germany) ​

User Mo Nazemi
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1 Answer

6 votes

Answer:

Austria-Hungary

Step-by-step explanation:

A-H declared war on serbia after Gavrilo Princep a serb nationalist assassinated the Archduke

User Icky
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