The answer to this question is Surveys
Survey is the data collecting method that easy to be done because it collect informations from wide variety group of people, especialy after the development of internet. Not only that, these type of data usually could target questions that usually private and unable to be told in public.
Separation of powers - APEX
I think the last one lowkey
Answer:
I think A, B, and D.
Explanation:
Several nations were competing for land. The more land they had, the more power they had, gaining resources and turning others to their religion.
