▁and ▁method ologies . ▁ ▁History ▁ ▁In ▁their ▁research ▁activities , ▁the ▁staff ▁of ▁Centre ▁for ▁the ▁History ▁of ▁Western ▁Lith u ania ▁and ▁Pr uss ia ▁focused ▁upon ▁investigation ▁of ▁the ▁relations ▁between ▁the ▁Order ▁of ▁the ▁Te ut onic ▁Kn ights ▁in ▁Pr uss ia ▁and ▁the ▁Grand ▁Duch y ▁of ▁Lith u ania , ▁development ▁of ▁soci eties ▁of ▁these ▁states , ▁the ▁history ▁of ▁the ▁German - L ith uan ian ▁relationships ▁in ▁the ▁Pr uss ian ▁Lith u ania , ▁highlight ing ▁political ▁and ▁social ▁turning ▁points ▁in ▁the ▁ 2 0 th ▁century ▁experienced ▁by ▁the ▁former ▁territory ▁of ▁East ▁Pr uss ia , ▁and ▁the ▁past ▁of ▁the ▁historical ▁region ▁of ▁Sam og it ia . ▁Historical ▁and ▁arch ae ological ▁investig ations ▁of ▁K la ip ė da , ▁Pal anga ▁and ▁other ▁towns ▁and ▁town ships ▁of ▁Western ▁Lith u ania , ▁as ▁well ▁as ▁analysis ▁of ▁historical ▁issues ▁of ▁the ▁Kal ining rad ▁O blast ▁and ▁the ▁former ▁East ▁Pr uss ia ▁were ▁accomplished ▁in ▁the ▁Centre ▁for ▁History . ▁ ▁In ▁co operation ▁with ▁the ▁Polish ▁scient ists , ▁the ▁Centre ▁for ▁History ▁initi ated ▁under water ▁arch ae ology , ▁a ▁research ▁field ▁new ▁for ▁Lith u ania . ▁In ▁collaboration ▁with ▁the ▁Nord ost deutsch es ▁Kultur werk ▁Institute ▁in ▁Lü ne burg , ▁collection ▁of ▁the ▁archive ▁ind isp ens able ▁for ▁historical ▁urban ▁research ▁work ▁started ▁in ▁K la ip ė da ; ▁the ▁Cultural ▁Centre ▁of