Answer:To Prevent Bias which may arise from a major difference from personal characteristics.
Explanation: Sampling is a part of a population that is to be used for a research or experiment.
Variables are factors or members of a sample or Population that are can be altered (Dependent variables) in order to create an effect on another variables.
Independent variables are variables that are consistent and are not affected by other variables.
To Prevent BIAS,proper Sampling or inducing independent variables it must include all the factors necessary in an experiment or research.
Answer: Something called a ballot box
Explanation:
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The Embargo Act of 1807 prevented US from exporting any goods. The goal was to make France and the UK take the US more seriously. The Embargo quickly failed as it bankrupted many American merchants and farmers while not heavily affecting the European powers. It was revoked on March 1, 1809.
i would say A Charter schools
