One of the most important thing is to invest in education. During the early childhood is essential to provide a proper education because these first six years are going to influence in the future of the child about how the children will learn and how many chances to succeed they could have in their futures lives.
The oldest responsibility of government is to protect citizens from violence by creating and applying human rights since the birth. This includes to provide the safety and order, protecting citizens from each other and from foreign causes.
It also must support the economic infrastructure of human connectivity that, in social concepts, improves the capital necessary to live in a dignified way.
That could definitely be argued! The WWI was fought in Europe, so many European countries were left in pieces at its end. So they were definitely in need of outside support. One may also look at it from another point of view. The US refused to join the League of Nations, which shows that the country was not necessarily as involved in world affairs as it could have been.
The answer would have to be the third option
People died or got killed with weapons , lots of blood.
Answer: He attempted to negotiate a mutually acceptable peace settlement between the two sides.