Manifest destiny and federal expansion
The Stone Age<span> was a time thousands of years ago, when humans lived in caves and jungles. </span>Life<span> was simple, and there were only two main things to do – to protect themselves from the wild animals and to gather food. It started almost with the evolution of mankind. For both purposes, people made tools from </span>stone<span>.</span>
C IS THE ANSWER
an agreement for self- government
League of Nations.
It fell apart because it failed to stop WWII (partially because the US didn't join it), and after WWII, the United Nations was created.