Answer:
correct me if i'm wrong, but I believe the answer is D
Explanation:
According to the attached image, the primary source was created Just after Austria-Hungary declared war on Servia (Serbia)
<h3>What is A primary Source?</h3>
In history, a primary source refers to the first account of an event which is narrated by people who were present when such an event occurred.
The primary source of an event is the most direct evidence of a time an event happened and is usually devoid of twists because such events are narrated as truthful as possible.
Learn more about a primary source at brainly.com/question/896456
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