Answer:
After the war ended, the global economy began to decline. In the United States, 1918–1919 saw a modest economic retreat, but the second part of 1919 saw a mild recovery. A more severe recession hit the United States in 1920 and 1921, when the global economy fell very sharply.
Step-by-step explanation:
When the war began, the U.S. economy was in recession. ... Entry into the war in 1917 unleashed massive U.S. federal spending which shifted national production from civilian to war goods. Between 1914 and 1918, some 3 million people were added to the militar