Hey there,
I did VCE not HSC, so take everything with a grain of salt. Some aspects you can look at include:
- Background to how the Triumvirates formed
- The political backgrounds of the individuals
- Differences and similarities between their collective aims
- Differences and similarities between the individual aims of the triumvirs.
- What was each member's political interest and what did they offer to the alliance?
- Their decline - what made the triumvirates break apart / lose power?
- Conflicts between the triumvirs - how stable / unstable were their alliances?
- Legal differences - for example, the First Triumvirate was a private political alliance, while the Second Triumvirate was legal and publicly recognised.
- How differently were they viewed by the senate?
- What about Roman citizens? Did their views change in regards to the triumvirates?
Good luck with your assessment!