<span>Guadalcanal
.......................</span>
FDR created the united nations and his predecessore xreated NATO to stop the spread of communism.
Cultural genocides
<span>Acts and measures undertaken to destroy any nation's or ethnic group's culture are called 'cultural genocide. The concept was coined by </span>
<span>Raphael Lemkin, and it involves a nationalized effort to exterminate the culture,value systems and believes of other ethnic or cultural groups.
</span>
I think it is C. Austria-Hungary attacked Serbia to stop ethnic unrest.
Hope this helps!