What is ur question concerning this?
Answer:
Yes, he provides essential information of the past so that the current inhabitants of the community don't make the same mistakes humanity has made in the past. Without him the world/community would continue a vicious self-destructive cycle.
A persuasuasive is persuading someone to do something an argumentive is arguing with someone about something relevant
Colonies justify their independence based in the principal of autonomy, sovereignty and self-determination which gives them the right as organized territories to rule themselves and not to owe their allegiance to a foreign power. Some of the reasons why countries seek their freedom from colonizing powers is because the inequality of treatment between the colonies and the central power, social disadvantages for people who are from the colonies to access education, land ownership, political participation, social mobility, etc.