They hated the christians and jews because they believed in god.
The various landmarks shown in the painting as well as an African man
Talking to a person you do not know, an email to a business representative, and similar would be situations where someone would have to use formal language.
The level of immigration between 1930 and 1945 is most directly related to the Great Depression and World War ll. Due to the poor economy with little opportunity for better living standards, very few people were willing to immigrate to the USA.