Final answer:
Julius Caesar was central to the end of the Roman Republic through his involvement in the civil war, conquest of Gaul, and alliance in the First Triumvirate.
Step-by-step explanation:
Julius Caesar played a major role in the end of the Roman Republic. He was involved in a civil war against his rival Pompey, which eventually led to his absolute rule as dictator. Caesar also conquered Gaul (present-day France) during his military campaigns, which further solidified his power and popularity.
Before becoming dictator, Caesar formed the First Triumvirate with Pompey and Crassus. This political alliance allowed them to share power and influence in Rome. However, tensions arose between Caesar and Pompey, leading to the civil war.
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