I believe it’s C. India they are well known for silk trade
Answer
The song dynasty ended due to the mongols invasion.
Explanation:
The song dynasty tried to expand south, and the mongols from central asia took over
C on 9/11 osama bin laden attacked america and it was the biggest terrorist attack in american history
The Unites States thought that the action was severe enough to declare war on north Vietnam.
He landed in what is now the US and basically was the foundation of the US
