Second Triumvirate of Rome

I need to develop a thesis to apply to the second triumvirate of rome and write a 800-1100 word abstract that makes clear what I will argue and what my main points of evidence will be for a 8 page argumentative/research paper. I have attached a paper with around 900 words of a rough summary of the second triumvirate. However I need a thesis to apply to this abstract. I have attached the summary which has some errors. The three main people are Mark Antony, Octavian (Augustus), and Lepidus (Marcus Aemilius). I am basically asking for a thesis about anything of the second triumvirate that can be argued and supported with evidence. This 800-1100 word paper is an abstract for an 8 or more page research paper.