Which section of this passage isn’t an example of an independent clause

Not sure if there was any sort of picture or something to go along with this but my guess is the book went into deep depth and was very informative.

“the first decision that led to brutus’ downfall is when he decided that he would join the conspirators in their plot to kill caesar. the plot did not work. the conspirators had to flee for their very lives. the second decision that led to brutus’ downfall is when he refused to listen to cassius. “ i hope this information you.