The FEUDAL SYSTEM of medieval Europe (roughly 9th–15th centuries CE) is BEST characterized by:
ABest treated as an artifact of 19th-century nationalist historiography rather than as a distinctive historical development, with most substantive claims about it lacking primary-source support.
BA hierarchical arrangement in which land was granted in exchange for military and other services — lords granted use of land to vassals in exchange for service; peasants worked the land in exchange.
CA single democratically-elected central government covering all of medieval Europe.
DAn absence of any political or economic structure of any kind.
Explanation
Medieval European feudalism was a hierarchical arrangement in which land was granted in exchange for military and other services. Lords granted use of land (fiefs) to vassals in exchange for service and loyalty; peasants (serfs) worked the land in exchange for protection and use rights. It is a foundational concept in medieval European historical geography. Options B–D contradict documented history.