This view was newly interpreted by Oskar Halecki (1891–1973), who argued that Lithuania was incorporated into Poland from 1386 to 1401, then became Poland's fief to 1440.
这种观点最近被奥斯卡·哈莱茨基（1891年—1973年）解释，他称立陶宛自1386年至1401年被并入波兰，随后成为波兰封地，直到1440年。