Feudalism refers to a general set of reciprocal legal and military obligations among the warrior nobility of Europe during the Middle Ages, revolving around the three key concepts of lords, vassals, and fiefs.
Defining feudalism requires many qualifiers because there is no broadly accepted agreement of what it means. For one to begin to understand feudalism, a working definition is desirable. The definition described in this article is the most senior and classic definition and is still subscribed to by many historians.
However, other definitions of feudalism exist. Since at least the 1960s, many medieval historians have included a broader social aspect, adding the peasantry bonds of manorialism, referred to as a "feudal society". Still others, since the 1970s, have re-examined the evidence and concluded that feudalism is an unworkable term and should be removed entirely from scholarly and educational discussion (see Revolt against the term feudalism), or at least only used with severe qualification and warning.
Outside of a European context, the concept of feudalism is normally only used by analogy (called semi-feudal), most often in discussions of Japan under the shoguns, and, sometimes, medieval and Gondarine Ethiopia. However, some have taken the feudalism analogy further, seeing it in places as diverse as Ancient Egypt, Parthian empire, India, to the American South of the nineteenth century.
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