B. It brought about the unconditional surrender of Japan.
Not A, the bombs were dropped instead of invading, which had a very high estimated casualty rate if the US did.
Not C, Germany eventually faltered and caved in, and then surrendered in the European Theater.
Not D, the Japanese Empire was using Kamikaze attacks longs before Atomic weapons were developed.
A. War with the Etruscans.
I believe here are the challenges:
<span>a) competition grom countries with larger economies (the strongest competitor come from United States, China, Russia, Japan, and South Korea)
</span><span>c) an aging population, ( In recent years they experienced about 77% increase in elderly population)
d) members with weak economies (Most notably is Greece which is really close to bankruptcy)</span>