A , D, E
Explanation: I got it right on edge
He impressed him by murdering, or killing people.
I believe the answer is: catgut tied to crude metal wires
The catgut is made by the intestines of mammals such as horse or sheep. Ancient Egypt was among the first one to use this method in order to preserve the teeth.
For wealthier citizens, they might use a more expensive metal for the braces. The Etruscans for example use gold as a form of brace in order to prevent tooth collapse.
Not too sure but to get you closer to the answer, Rocks aren't Minerals; They are comprised of 2 or more minerals, And Limestone is also comprised of minerals. Now between Silver and Gold, I'm not sure but there have been talk over the years as the Great Plains being the next location of a Gold Rush. But again I'm not too sure, but I hope this helps.
