What challenges faced the United States after World War I ended?

Major problems at the end of the war included labor strikes and race riots, and a lag in the economy due to farmers' debts. The Red Summer of 1919 saw an increase in violence in more than two dozen cities, as returning veterans (both white and African American) competed for jobs.

the economy crashed and America was in a shortage for everything like food, clothing ,money, ect. since world I america was in $208 billion dollars in dept and caused a great depression.

Explanation:

after defeating german forces in north africa allied leaders turned their attention to "italy," since this was the location that made the most geographic sense before invading northern europe via france.