Answer:
Assassination of <u>Archduke</u><u> </u><u>Franz</u><u> </u><u>Ferdinand</u>
The correct answer is the declaration of independence.
It was mostly written by Jefferson and it pointed out to all the bad things the king has done against the colonies. These things were called grievances, and the grievances are the reason as to why they are breaking away from the empire in order to establish their own country.
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The impact is that thousands of japenese were forced to work in labor camps due to their threat in WWll.