tree ring datafossilized firewoodweapons used by premodern armiesremnants of medieval clothingWhat subject for analysis has the field of historical climatology incorporated into the investigation of historical climate change?Elon.io is an online learning platformWe have an entire course teaching World History 1 grammar and vocabulary.Start learning World History 1 nowYour questions are stored by us to improve Elon.ioYou've reached your AI usage limitSign up to increase your limit.