The correct answer to this open question is the following.
Although there are no options attached we can answer the following.
The difficulties that President Woodrow Wilson experience at the Paris Peace conference when he tried to promote his vision of the post-World War I world were the following.
The first difficulty was the inability of the Allies to deal with the issue of what to do with Germany and how this country was going to pay for the reparations. The second was the total rejection of Germany to pay for the war reparations based on the Treaty of Versailles, including the ill-fated clause called "war-guilt."
President Woodrow Wilson had presented his famous "14 points" in order to establish long-lasting peace in Europe. He presented ideas to address the causes of World War I, recommendations to prevent another world conflict, and the creation of a specialized organization called the League of Nations.
However, the points were rejected by France and Great Britain. The two were more interested in retribution and force Germany to pay for war reparations than to establish a long-term peace.
