I do not wanna say the wrong thing or youse the wrong words so the answer is on google I am 100% sure :)
Answer:
Probably England or Spain.
Explanation:
Cosmologists :)
Oceanographers study the ocean, meteorologists study the weather and geologists study rocks.
Answer:
Letters and publications written by Nazi leaders before the Second World War.
Explanation:
This answer is correct because this historian is searching for the motives of these perpetrators, letters and publications can tell their thoughts and conversations.
The endless cycle of life and death which seeks liberation.