He believed that to get involved would stir up relations with other foreign allies therefore he thought it was best to stay uninvolved. For example during the French Revolution he created an act that kept us from becoming involved and this caused James Madison to say that what he did was out of line without approval of congress. this act was the Proclamation of Neutrality of 1793
You didn't include options but here's the jist - there were many casualties, cities and towns were left in ruins, national identities across Europe were in shambles.
When Shi Huangdi took control of China, the name of the system of government that he put into place was Communism.
