The person that got shot was Archduke Franz Ferdinand, Heir of the Austrian- Hungarian throne.
Answer:
Kush began to fade as a power by the 1st or 2nd century AD, sapped by the war with the Roman province of Egypt and the decline of its traditional industries. ... Christianity began to gain over the old pharaonic religion and by the mid-sixth century AD the Kingdom of Kush was dissolved.
(credits to the rightful owner of these answers, I just hope this helps you :)
It was the "League of Nations" that was the international governmental organization that the United States declined to join after World War I, since most Americans thought this would entangle them in more European wars.
If other countries aren't willing to fight for them and they cant fight for themselves the United States probally would but no we dont have to