This is a simple sentence because in its entirety it is a single clause. There are no multiple independent clauses connected or any subordinate clauses to make it compound or complex.
Answer:
The opposing force may be a person or some other element. The protagonist (main character) is pitted against some other character or group of characters (antagonist). This is also called external conflict because the protagonist is pitted against a force outside of himself/herself.
Explanation:
Douglas thinks Mrs.Auld was not cruel before she became a slave holder
Douglas believes that slavery was very destructive towards Mrs. Auld
Douglas realized that Mrs. Auld was as insecure and eager to please her husband.
My brother posted this question and got this answer hope it helps!