Rome won all three wars vs Carthage over the control of the Mediterranean. Rome gained territory as a result.
The death of Caesar
Caesar led his army across the Rubicon river in Italy to fight Pompey and his army.
The second Triumvirate
He was declared dictator for life instead of just 6 months. After that Caesar named himself Imperator , the Roman word for emperor which made a lot of Senators not happy.
Death of Mark Antony
Caesar on the 15th of march after being warned previously to be careful he was back stabbed by Brutus and Senates. He was stabbed 35 times until he fell down and died.
Caesar's nephew, Octavian took over Rome and allied himself with Mark Antony & Marcus Lepidus. The Second Triumvirate fought to avenge Caesar’s death. They defeated the armies of Cassius & Brutus. The three divided the conquered land between them.
After Mark Antony divorced Octavia married the queen of Egypt and Octavian found that to be a threat to his power so he did a war with Mark Antony which when he won it made Mark Antony kill himself with the queen of Egypt.