<em> Its leader identified as an Incan.</em>
<span>Pope Julius II
This pope who reigned from November 1, 1503 to February 21, 1513. He founded the Swiss Guard to provide a constant corps of soldiers to protect the Pope. During his reign he's noted for many things, but primarily as a patron of the Arts. He laid the foundation stone of the new St. Peter's Basilica in 1506 and commissioned many works of art including the painting of the ceiling of the Sistine Chapel by Michelangelo.</span>
The answer to this question is C, I hope this helps you!
An important scientist at the time, besides, those who were mentioned was Copernicus - A.
Spartacus was just a slave general in the Roman republic.
Rousseau was a philosopher.
Plato was a philosopher as well.
The correct answer for that reason is Copernicus, he was an astronomer and a major figure at the time.