D Maybeee seems possible i did this my junior year
To make the League of Nations, restore countries, and to have no secret alliances. That’s the a majority of it I might have forgotten one last part
The new state that was created was Vermont
Explanation:
The Treaty of Versailles was enacted in 1919 as the paece agreeement that ended WWI and it signed between the Allied victorious powers and Germany. Its two major outcomes were the following: Germany, together with its allies, was forced to assume the whole responsibility for all the losses and all the damage caused.
If you are talking about the first air pollution problem its is A, almost about 100 years ago.
1955