Why did Augustus Caesar and Marc Antony fought?

Augustus Caesar and Marc Antony fought primarily for control of the Roman Republic following the assassination of Julius Caesar. Their rivalry intensified as they vied for power, leading to the formation of the Second Triumvirate, which eventually fell apart. The conflict culminated in the Battle of Actium in 31 BCE, where Augustus's forces defeated Antony and Cleopatra, leading to their eventual suicides and Augustus's rise as the first Roman Emperor. This marked the end of the Roman Republic and the beginning of the Roman Empire.