I would say it's mostly climate, as it determines two things: 1) what can grow/live in a given place and 2) how long can the products be kept
Additionally, it's the closeness to such things as water sources where you can fish and trade routes: a lot of European cuisines include cofee products, even if cofee is not grown in Europe!
Answer:
The U.S.S.R
Explanation:
up to 20million people died in the Soviet Union (U.S.S.R)
Your answer is (C) he wanys to invest in equipment to mine more diamonds