1) what problems did wwii resolve?
2) what international challenges did it create?

WWII solved problems such as The Great Depression, it made more jobs available, it brought the United States and other countries such a France, The Soviet Union, and Great Britain together towards a common goal, it created the United Nations, it brought light to Antisemitism, and it created war laws

It created problems such a hostile interactions between the United States and Russia, it created The Arms Race and The Cold War, it caused Genocide and left Europe in ruin, leaving France in debt, and the fact that whether the United States should allow Japanese, German, and Italian people to live here, it also created the guilt on the United States for not getting involved sooner, if they would have many lives would not have been lost