Title: Pain.
Question: What did DC Sinclair and G Weddell propose a property of all skin fiber endings is?

Title: Freemasonry.
Question: The Old Charges are dated from when to when?

Title: Iran.
Question: The Abbasid army replaced Iranian and Arabic men with Turkic tribesmen as what element in their army?

Title: Qing dynasty.
Question:
How long did the Revolt of the Three Feudatories last?