Answer:
protagonist and antagonist
Explanation:
The two main characters that should be present in a story are the protagonist and antagonist.
The protagonist one of the main characters. The protagonist is the person leading a contest, a principal performer in the story. He/She is an advocate or champion during the course of action.
An antagonist is the other character in the story. An antagonist usually opposes the protagonist in a literary work or drama. He/she is an enemy or opponent who antagonizes or stirs.
Well, unregulated power can lead to greed and zero mercy for those within your peasant realm. Great unhealthy amounts of cruelty, and etc.
A compound sentence.
In a compound sentence, simple sentences become known as independent clauses; the two independent clauses together make up a compound sentence. ... The second is a simple sentence consisting of one independent clause with one subject and two verbs (or one verb used twice)
Example:
A man may die, nations may rise and fall, but an idea lives on.
I want to lose weight, yet I eat chocolate daily.
More examples here:
https://englishstudyhere.com/sentences/20-compound-sentences-in-english/