Battle of Antietam is the eighth-costliest land battle of the American Civil War <span>also known as the </span><span>Battle of Sharpsburg. Hope this helps!!</span>
I believe it is B. unite the colonies in their opposition to British policies.
Answer:
internal validity; external validity
Explanation:
The simulation experiment or a computer experiment is performed to verify the correctness of any program or operation and to evaluate the performance of the proposed project.
It is mainly used for the process analysis as well as for the process optimization of the experiment. Doing a simulation experiment maintains the internal validity of the experiment. It also maintains the external validity of the research that is conducted in the real world.