Answer:
True
Step-by-step explanation:
It is TRUE that Both William Hartsfield and Ivan Allen, Jr. Worked for a calm and peaceful transition to desegregate Atlanta.
This is evident in the fact William Hartsfield who was a former Mayor of Atlanta was credited the slogan "the city too busy to hate" for his support and efforts during the period of civil rights crusades in the 1950s
Also Ivan Allen, Jr. a former Mayor of Atlanta and successor to William Hartsfield was known for his efforts to ensure Atlanta thrives economically without segregation of African Americans.