Final answer:
The first reliably chronicled pandemic plague, the Justinian plague, occurred in the sixth century CE.
Explanation:
The first pandemic plague that was reliably chronicled occurred in the sixth century CE, known as the Justinian plague. This pandemic is thought to have originated in central Africa and spread to the Mediterranean through trade routes, leading to significant casualties.
Learn more about Pandemic Plague in History here:
https://brainly.com/question/38721282
