Famousforherheroicroleinhelpingslavesescapethroughthe...
问题详情： FamousforherheroicroleinhelpingslavesescapethroughtheUndergroundRailroad,Hamet TubmanalsofoundahomeinCanada. WhentheU.S.FugitiveSlaveActcameintobeingin1850,manyescapedslavesinthenorthfle...