Answer with explanation:
1. highest ---> aristo-
(aristocracy is a social class which is considered the highest in order by a particular society)
2. nation ---> ethno-
(there are nations which are defined by their ethnicity - ethno-nationalism)
3. man ---> anthropo-
(anthropology is the study of human societies and their development)
4. father ---> patri-
(patri- is a combing form which means father)
5. ruler ---> arch-
(the Greek root arch means rule)
6. world ---> geo
(geo means earth or world)
7. citizen ---> poll
(poll indicates the number of people or their voting)
