What problems might an outside country create if it draws borders without understanding local political or ethnic situations?

This is not merely a hypothetical but a reality.

Take Rwanda.

Rwanda was drawn without an understanding of the ethnic make up.

And, in effect, a minority population was given control over a majority population.

This is problematic as it creates tensions that should not exist.

c

explanation:

the hereditary right of a monarch to rule from the mandate of heaven