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.
I believe the answer is: <span>Straw Man
</span><span>Straw Man argument refers to a form of counter-argument that is not actually addressed the previous argument.
</span>In the example above,giving one example would not actually address the initial argument (boys better at math) because the initial argument referred to 'average boys in general', not just one.
Through those excerpt, the writers argue that society should <span>return to a time when personal morality was the guide for professional decisions.
This seems to be important judging by the pace of development in our society that tend to become closer and closer in always being result oriented for professional decisions.</span>
The study found that half of the drop-off could be accounted for by : reduce mobilization effort
mobilization effort refer to the cardiac works that has to be putted in order to do something. As people tend to be more secluded and relied on technology to do and get anything, people tend to be less interested to got up and walk to the voting booth