Conversation so far:
What was the Conquistador?
Conquistadors were the knights, soldiers, and explorers of the Spanish Empire and the Portuguese Empire.
Why did the conquistadors resist the recall?
The conquistadors wanted to find El Dorado.
How long did Francisco Pizarro stay in South America?
Francisco Pizarro served there until 1541.
Did Francisco Pizarro set out to try again at exploring South America?
Francisco Pizarro set out on several expeditions in South America.
What discovery motivated Francisco Pizarro on his exploration in South America?
In April 1528, Francisco Pizarro reached northern Peru and found the natives rich with precious metals.
When Francisco Pizarro arrived in Peru, did the Peruvian natives realize the value of the precious metals they had?
It is unclear if the natives recognized the value of the precious metals, but it is clear that they didn't tolerate Spanish presence, including that of Francisco Pizarro, after that.

Question: When did he set out for the 3rd expedition?
Self-contained rewrite: When did Francisco Pizarro set out for the 3rd expedition?