A concept of federalism where local, state, and national governments interact cooperatively and collectively to solve common problems separately, but more or less equally (dual federalism).
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The science of adjusting environments, tasks, or procedures to fit the individual is ERGONOMICS. In other words, it is also defined as the study of a worker's efficiency in a workplace and how this efficiency can be improved together with the well-being of the worker.
On 1967 of April, with the United States at war in Vietnam, Ali declined to be accepted into the military, saying "I ain't got no squabble with those Vietcong." On June 20, 1967, Ali has indicted draft avoidance, sentenced to five years in jail, fined $10,000 and restricted from boxing for a long time.