People were spending money they didn’t really have (due to credit being a new thing) and everything was basically a party until 1929
<span>On December 7, 1941 Japan attacked the US Navy at Pearl Harbor in Hawaii. ... The US joined the Allies in World War II the next day. The attack at Pearl Harbor united the Americans with the goal of defeating the Axis powers, and especiallyJapan.</span>
The years were 1837-1901 it was the era queen Victoria ruled and it was a long period of peace.
I believe it was around June 1942 to August 1943, during World War II.