Where in this sentence is there a grammatical error?

"by reading history we come to understand that civil wars have occurred in many countries including england, spain, and russia."

What is this scene's impact on the audience? select two options. the verbal irony adds some humor to the scene. the verbal irony shows that brutus is honorable. the verbal irony shows the audience that casca is easily led. the situational irony shows the audience that brutus is honorable. the situational irony shows the audience that casca is not very smart.