The passage discusses four potential topics for an assignment on cities: 1) an annotated bibliography on an ancient city in Mesopotamia, Egypt, Indus Valley, or Mesoamerica; 2) a paper on a European city established by Romans discussing its development during Roman and medieval periods; 3) an annotated bibliography on Berlin discussing its origins theories; or 4) a paper on the establishment and pre-1900 development of a North American colonial city.