▁by ▁T ú p ac ▁Am aru ▁II . ▁During ▁the ▁u pr ising , ▁Bart ol ina ▁S isa ▁was ▁given ▁an ▁important ▁leadership ▁role ▁at ▁the ▁head ▁of ▁an ▁army ▁of ▁around ▁ 4 0 , 0 0 0 ▁ ▁Sie ge ▁of ▁La ▁Paz ▁▁ ▁Bart ol ina ▁S isa , ▁her ▁husband ▁and ▁other ▁ind igen ous ▁leaders ▁like ▁José ▁Gabriel ▁Cond or can qui , ▁later ▁known ▁as ▁T ú p ac ▁Am aru ▁II , ▁and ▁the ▁brothers ▁Dam as io ▁and ▁Tom ás ▁Kat ari ▁were ▁joined ▁together ▁in ▁their ▁ide als ▁of ▁ind igen ous ▁emp ower ment ▁and ▁managed ▁to ▁gather ▁around ▁ 1 5 0 , 0 0 0 ▁ind igen ous , ▁mostly ▁Que ch u as ▁and ▁A ym ar as , ▁to ▁join ▁their ▁cause . ▁ ▁On ▁ 1 3 ▁March ▁ 1 7 8 1 ▁S isa ▁and ▁T ú p ac ▁Kat ari ▁establish ▁a ▁sie ge ▁around ▁the ▁city ▁of ▁La ▁Paz , ▁then ▁capital ▁of ▁Char cas ▁and ▁seat ▁of ▁the ▁colonial ▁Real ▁Aud iencia ▁with ▁a ▁force ▁of ▁some ▁ 2 0 , 0 0 0 ▁men , ▁later ▁to ▁be ▁joined ▁by ▁other ▁ 8 0 , 0 0 0 . ▁The ▁city ▁is ▁located ▁on ▁an ▁en closed ▁valley ▁with ▁limited ▁access , ▁and ▁the ▁sie ge ▁was ▁able ▁to ▁completely ▁block ▁all ▁movement ▁to ▁and ▁from ▁the ▁city . ▁During ▁this ▁time , ▁S isa ▁organ ised ▁military ▁cam ps ▁around