How did the isolationist action of the us affect lasting peace in europe after world war i

It can be argued that US involvement in European politics could have prevented another world war. Support for the League of Nations could have stabilized the region. The US government did not support the League of Nations and without the US supporting it quickly crumbled. So because of American absence in the continent due to isolationist policy, it can be argued that World War 2 was destined to happen because of the unfair Treaty of Versailles

where's the

the answer i chose to believe is 'harmony'