The technique used is sampling. The process that you will do in random sampling is there will be a selection of a subset of randomised number of the members of the population of a study. The researcher will have to take a portion of a population and treat them as representative of that population. There are actually a lot or different kinds of sampling. These are the random sampling, systematic sampling, stratified sampling, convenient sampling and judgment sampling, quota sampling and snowball sampling. Since the data is taken from every member of the population, this is called census study. It is a common knowledge that the entire population is too much to cover by the researcher alone thus this is what the researchers do. They then carefully choose samples to represent the whole population for their study.
On main strategy is finding a common enemy, either foreign or domestic. Another is providing economic incentives. Another is through propaganda campaigns and false history. <span />
This is the zone that is most acceptable during an encounter with most of your friends and closer acquaintances because you know them well so there's <em>no need to be far away</em> from them.
