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Feudalism in the Holy Roman Empire was a politico-economic system of relationships between liege lords and enfeoffed vassals that formed the basis of the social structure within the Holy Roman Empire during the High Middle Ages. In Germany the system is variously referred to Lehnswesen, Feudalwesen or Benefizialwesen. Feudalism in Europe emerged in the Early Middle Ages, based on Roman clientship and the Germanic social hierarchy of lords and retainers. It obliged the feudatory to render persona
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Answer:
<em>B. Humane methods of animal experimentation</em>
Explanation:
The regulations and guidelines of United States Department of Agriculture , Animal Welfare Act, Public Health Service (PHS), the Guide, and The Association for Assessment and Accreditation of Laboratory Animal Care International, or AAALAC, as applicable, requires organizations or entities that use animals in science, teaching, training, research or testing to provide instruction and training on humane methods of experimentation and research.
