7. Which word refers to a dark natural glass formed from lava and used by Mesoamericans for making tools and other objects?

The inventor cocreated the film fred arts sneeze which was one of the first american movies

What deadly disease cost many workers their lives before dr. william gorgas found a treatment?

Imagine you are a historian studying a battlefield journal written by a soldier serving in world war i. describe the process of interpreting the information within the journal, as well as how you would determine whether the evidence in the journal is valid