I think it's the Industrial Revolution. Let me know if this helped!
The Columbian Exchange was the widespread transfer of plants, animals, culture, human populations, technology, and ideas
Woodrow Wilson was one of the main influences in the ending of World War I. He worked very close with the leaders of France and Great Britain in order to develop the Treaty of Versailles. In this treaty, the League of Nations was created. This idea, developed by Wilson, was supposed to be a collection of countries who worked together to keep international peace.
Even though Wilson supported it, the US Congress did not. This effort to not join the League of Nations was headed by Henry Cabot Lodge. Lodge felt that the US should avoid constant foreign entanglement. Along with this, Lodge worried that joining this organization would cause the US to be dragged into more wars in the future.
The answer is that he thought they were responsible for the ills of Germany. Hope this helps!
