Answer:
A
Explanation:
The only one that would directly affect the living standard.
Gold, Ivory, and Animal skins
Answer:
b
Expla
Germany allied with Japan to gain from Japans industrial strength.
I think Mars environment as it's natural state is not applied for human living but discoverers would be able to start building special permanent bases (named by NASA). It allows to do experiments and observe Martian atmosphere.
