(July 13, 100 BCE – March 14 44 BCE), was a Roman military and political leader. He played a critical role in the transformation of the Roman Republic into the Roman Empire.

As A politician he formed an unofficial triumvirate with Marcus Licinius Crassus and Gnaeus Pompeius Magnus which dominated Roman politics for several years.

His conquest of Gaul extended the Roman world all the way to the Atlantic Ocean, and he also conducted the first Roman invasion of Britain in 55 BCe.

the collapse of the triumvirate, however, led to a stand-off with Pompey and the Senate. Leading his legions across the Rubicon, Caesar began a civil war in 49 BC from which he emerged as the undisputed master of the Roman world.

After assuming control of government, he began extensive reforms of Roman society and government. He was proclaimed dictator , and heavily centralised the bureaucracy of the Republic.

However, a group of senators, led by Caesar's former friend Marcus Junius Brutus, assassinated the dictator on March 15 in 44 BC, hoping to restore the normal running of the Republic.

This resulted in another Roman civil war, which ultimately led to the establishment of a permanent autocracy by Caesar's adopted heir, Gaius Octavianus; Octaveous In 42 BC, two years after his assassination.