Bloodletting, a treatment devised centuries ago to restore the balance of humors, was accomplished with the use of leeches.
Bloodletting was divided into a two methods. It was done by either venesection and arteriotomy.
A localized method was also done by scarification done with cupping and leeches.
Venesection was the most commonly used procedure and generally involved the vein at the elbow, but also many different veins could be used for this treatment.
The major instruments which were used for this technique were called lancets and leeches.
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I believe the answer is: Lorenz
Lorenz's finding indicates that a certain set of behaviour is already exist ever since an organism is born without having to be learn. The act of the goslings to chase the first object they see is a form of biological impulse to understand the environment around them.
Looking at #1, it should be D, but Im not to sure about that. #2 is most definitely, however, is A. State level government is less than national, but they cant nullify another states law, and they cant form a new nation UNLESS the national government is mistreating them. Then they can call away from them, but a state election is able to be recalled by both state government and national government. :D