<span>The answer is B. the assassination of Archduke Franz Ferdinand in Sarajevo
Powder keg in general term is a barrel of gunpowder but it is also used figuratively to refer to the way a small event sets off something much larger. Europe already had many small conflicts but in this event Archduke Franz Ferdinand was a heir to the austrian empire so as he was killed by Sarajevo who was Serbian Austria declared war on Serbia. Serbia was an ally of Russia.So Russia declared war on Austria-Hungary, then Triple Alliance and Triple Entente kicked in, bringing the entire continent to war.</span>
Huh, what exactly is your question
Answer:
stop segregation as it was unconstitutional
Generally speaking, objective historians behave in all of the following ways except that "<span>D. they interpret the evidence according to their personal beliefs and values" since this is not being objective. </span>
