When did doctors start washing their hands?

Which statement describes the impact of the 21st amendment?

Which of these is not a criticism of the concentric zone model? it does not accurately describe cities after the rise of suburban development. it only applies to cities that grew after the development of the automobile. it assumes that inner-city areas will always be repurposed instead of abandoned. it places too much importance on the traditional central business district.

Do you think the cartoonist has a positive or negative view of bryan? why?