It is called experimenter bias
experimenter bias refers to the cognitive bias that held by researchers that might cause them to subconsciously influence the outcome of the experiment.
The most likelt cause of this bias is a situation where experimenters held a certain belief or expectation for the outcome of the experiment.
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When the body is given weakened/dead pathogenic material this helps build up an immune system towards the actual live infection. It prepares the body for the infection so that the person does not get sick.
I believe the answer is: Congress/legislators
In order to create a new government, a society need to establish a body that had the authorization to create regulation that must be followed by its people. Because of this, the existence of congress (which filled with all delegates from states) are necessary so each states could be represented during the law making process.
Answer:
D) power struggles among the major European countries
Explanation:
