Serbia and Austria-Hungary due to the Austrian-Hungarian Duke being assassinated presumably by someone in Serbia.
Answer:
the frontier had meant that every American generation returned "to primitive conditions on a continually advancing frontier line." Along this frontier -- which he also described as "the meeting point between savagery and civilization"
Explanation:
Hope I helped! if not im sorry.
There are several elements to this tradition. Freedom of speech, a democracy system where not just one person rule and makes decisions, and a jury system.
Answer: The correct answer is B.
Explanation: Hope this helps plz mark brainliest.