Did Jesus live during the Roman Republic or the Roman Empire?

He lived during both arrangements of Rome.

Explanation:

The Roman Republic was founded around 510 BC and lasted until 27 AD. Jesus Christ was born in 1 year of the new era, and from that moment, the counting of time begins, meaning that Jesus was born and lived in the time of the republic. The Roman Republic lasted until 27 AD, after which it was reorganized into an empire, which remained until its demise in the 5th century AD. According to tradition in the 30s during the Empire, he was killed, which means that he was alive in both periods of the arrangement of Rome.