Go and click to the invitation bar and you can find an option written as " search friends " . Then it's easy to find that unknown user if you're pretty fond with his/her username and DP ( display picture ).
Answer:
Option c
Explanation:
habeas corpus is a recourse in law through which a person can report an unlawful detention or imprisonment to a court and request that the court order the custodian of the person, usually a prison official, to bring the prisoner to court, to determine whether the detention is lawful.
Archduke Franz Ferdinand, Archduke of Austria-Este's assassination triggered WWI
The answers are in the PDF sorry about the first two I couldn't do them and if you can't open it ask me I can send it another way.
Answer:
C. Primary or Secondary sources related to the event.
Explanation:
A historian using primary or secondary resources related to the events is the most reliable.