▁Several ▁mes ol ith ic ▁or ▁ne ol ith ic ▁fl int ▁tools ▁have ▁been ▁found ▁in ▁sites ▁around ▁the ▁municipality . ▁ ▁There ▁are ▁several ▁early ▁medieval ▁gra ves ▁at ▁Kle ben rain . ▁ ▁By ▁the ▁ 1 3 th ▁century , ▁a ▁bridge ▁was ▁built ▁over ▁the ▁A are ▁river , ▁which ▁connected ▁the ▁village ▁to ▁regional ▁center ▁of ▁power ▁in ▁A ar w angen . ▁ ▁In ▁ 1 4 3 2 , ▁A ar w angen ▁came ▁under ▁Bern ese ▁power ▁and ▁brought ▁neighbor ing ▁Schwar zh ä us ern ▁with ▁it . ▁ ▁For ▁a ▁few ▁dec ades , ▁Bern ▁and ▁Sol oth urn ▁shared ▁authority ▁over ▁the ▁parish ▁of ▁Nieder bi pp , ▁which ▁included ▁Schwar zh ä us ern . ▁ ▁However , ▁in ▁ 1 4 6 3 , ▁it ▁came ▁completely ▁under ▁Bern ' s ▁control . ▁ ▁Following ▁the ▁ 1 7 9 8 ▁French ▁invasion , ▁under ▁the ▁Hel vet ic ▁Republic ▁it ▁became ▁part ▁of ▁the ▁District ▁of ▁W angen . ▁ ▁Schwar zh ä us ern ▁remained ▁in ▁the ▁W angen ▁district ▁until ▁ 1 8 7 1 , ▁when ▁it ▁joined ▁the ▁A ar w angen ▁district . ▁ ▁During ▁the ▁ 1 7 th ▁and ▁ 1 8 th ▁centuries ▁c ott age ▁industry ▁we aving ▁began ▁to ▁supp lement ▁agricult ure ▁in ▁the ▁local ▁economy . ▁ ▁During ▁the ▁ 1 9 th ▁century , ▁as ▁agricult ure ▁became ▁increasing ly ▁mechan ized ▁and ▁required ▁fewer