Simplify the following text for a Grade 8 native English-speaking person.
Original: Gaius Julius Caesar Octavian ( later known as Augustus ) and Marcus Antonius soon arrived , and Cassius planned to starve them out through the use of their superior position in the country .
Simplified: Octavian ( later known as Augustus ) and Mark Antony soon arrived . Cassius planned to starve them out , by using his superior position in the country .