Answer:Spread is going to a new location without any cause.Migration is going to a new location to escape violence,find a better job and many more.
Democracy means the government made for the people, by the people and of the people. To make the democracy successful, rulers and ruled should be responsible about their code of conducts.
To institutionalize the democracy, people have to make a right choice about selecting their leader. They must have the knowledge about all the leaders and government policies. The people have to be aware about the responsibility and right that comes on them in democracy.
The ruler selected by the public should know the necessary policies for the welfare of the economy and the public. He must be fair in his conduct and work for the betterment.
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.