Answer:
Nationalism and war
Explanation:
The Treaty of Versailles, though it was meant to help all nations in conflict to finally reach a peaceful treaty, brought consequences much harder and difficult in many countries. Not all of the presents in the treaty agreed in the decision taken about Germany and the punishments overall. Thus, the pay Germany had to pay brought a sense of anger and an increase of nationalism - later Nazism - and hate for those who belittled them. The displeasure in France and US caused distances between some allies, but brought together other few.
The United States advocated for the creation of the Kellogg-Briand Pact because they wanted to outlaw war. They hoped that the signatories will ensure that there will be no causes of war and there will be a peaceful relationship among the nations.
The United States don't want to engage in another World War after it has experienced the losses that World War I brought them as a nation.
John Adams was the Second President of the United States of America.
