1. In 1531, Francisco Pizarro overthrew the Incan empire, removing the emperor from his throne and taking for Spain the Incan imperial treasures.

2. Francisco Pizarro was a Spanish conquistador who destroyed the Inca Empire in the course of his conquest of Peru.

3. Many Spaniards who helped Francisco Pizarro conquer the Incas were fortune-seekers, not soldiers, "so the absence of sword injuries makes some sense," Murphy explains.

4. The Inca Empire was discovered by a Spanish conquistador called Francisco Pizarro, accompanied by about 169 Spanish soldiers.

5. Eight months later, they executed their royal captive, and in 1533 their leader, Francisco Pizarro, picked a young prince, Manco Inca Yupanqui, to rule as a puppet king.