复数： feudatories

The feudatory system is an important part of chinese ancient state system of government .

藩属制度是中国古代国家政体的一项重要内容。

The reason of pursuing the prince-dominated system is to take the actual political situation at that time into consideration ; meanwhile it also draws upon the experiences as well as lessons of the previously-existed feudatory systems .

推行这种宗王制度，既是出于对现实政治环境的考虑，同时也借鉴了历史上对于分封制的经验教训。