"feudalism"^^ . "0.0877565"^^ . . . "0.164838"^^ . "107972425"^^ . "feudal system"@en-us . . "0.1365"^^ . "0.0"^^ . . . . . . . . . "105976867"@en-us . . . . . "07972425-n"^^ . "the social system that developed in Europe in the 8th century; vassals were protected by lords who they had to serve in war"@en-us . "0.374783"^^ . "0"^^ . "107490719"@en-us . "0.0637514"^^ . . "0"^^ . "feudalism"@en-us . . "0.0301515"^^ . "0.14222"^^ .