Ain't any.
The exact locations of all the bomber crash sites is unknown and there are people in Germany and other nations who are searching and digging for bomber planes (and fighter planes). I saw a great show on the history channel or military channel about one of the digs. The townspeople who witnessed a crash dug to get the plane restored and to establish a memorial to the pilot and crew. I have attached an article about the efforts of some who are searching for the crash sites. There are museums and other associations searching for them too. See the related link below.
The stock market crashed before World War 2, in 1929.
If you mean crash it was in 1929.
No a plane crash in 1969
During The 1920's
Anzio
There are many battle sites all over the world i.e. Egypt, Ukraine, Japan, Hawaii, you name it
California built the battleship USS California.
lots of people came to California and California's population was huge!
STock market crash, depression.
Throughout World War 2
No it was in Maryland in 1812 __ WW1 (1914-1918) took place around the war, but no battles took place in California.