15. Which event was the spark that started World War I? A. The assassination of Archduke Franz Ferdinand
OB. Austria's ultimatum to Serbia
C. Russia's military mobilization
D. The assassination of Gavrilo Princip

A. The Assassination of the archduke

Explanation:

 Trust me pal I've read about it and also had to do an assingmen ton it.

the answer is "focused on"

lol gave an answer 1 week that's the answer for those who need it in the future xd

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d