Th only one that really makes sense is B... Sorry if it was late
So here is a website that is definitely gonna help
Europe's social structure was challenged by the growing number of free townspeople because they could not get a hold of everything already. With the addition of the increase of population, it is hard to divide resources and to everyone and this in return challenged the economy of the continent.
I believe that the Black Mesa extends into Northwest Oklahoma, namely the "Red Carpet Country" of Cimarron county in the Oklahoma Panhandle.
Answer:
to explore military uses of space
to increase their prestige
Explanation:
Super powers are states that have achieved to be in the hegemony.
This is a prestigious title that none of them wants to loose.
Monopoly over violence has to be maintained by this powered, hence, they are always on the run to increase their military strength, this is one of the reasons for space exploration.
Through space exploration also, they would maintain their prestige and ego as superpowers.