They believed so because the military strength of those countries increased in size by almost twice in the period between the two wars. They also felt humiliated after how World War 1 was resolved so they wanted their revenge and believed that they deserved more. Other parts included Africa and parts of Asia.
That statement is false.
That photo was taken by Ansel Adam.
Dorothea Lange was famous for her "migrant mother" which adress the issue of the people in lower society
