A - it taught him how to lay railroad tracks with steel
Answer:
he was a hero and is best known for his truly heroic final act: incarcerated in the Warsaw ghetto, with nearly 200 children from the orphanage he ran, he decided to refuse the offers of rescue he received from his Polish friends, and to accompany the children instead on their journey to Treblinka
Explanation:
hope it helps
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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Answer: Asia and Africa
Explanation: Good luck! :D