can someone who majors in history give me a biography of Harriet Tubman's time when she escaped slavery and after she did what she does

Harriet tubman was a woman born into salvey her parents and brothers were slaves. harriet tubman would faint when she was in the field master hit her on the head but she still continued you to work, one-day Harriet Tubman was working a white lady came up to her telling her about the undergrown railroad it is said after that the slaves started to sing so they can talk about the underground railroad. later that day Harriet tubman got some news that would change her life forever Harriet was being sold she told her brothers that she will be leaving and going to the underground railroad to seek freedom, that night she was about to leave with her brothers but they chicken out knowing the punishment for slaves who try to escape but that didnt stop her. her first night she bunked with a white family that helps the slaves escape they gave her food and blankets for her long journey to Pennsylvania. Harriet tubman almost got caught many times but never did because she was sneeking around the bush's after the slave master found out she had left from  Edward Brodas plantation, they set out men to go find her and bring her back. but by that time she was already in pennsylvania she cryed because she was free but she knew she had to go back for her family. Tubman found the guy who keeping other slaves and he greeted her with a warm smile. but that joy would soon be gone beause they got the news that they were taking back all escaped slaves from the south or there will be consacounises so Tubman didnt want to put the others life in danger so she left to free more slaves when she in the forest she found her brothers and some slaves she worked with in the field this inspired her even more so she made many trips back and forth to save other slaves but Tubman was smater then that they knew they were looking for her so she desciese up as man  

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom

i would think i'ts d hope this out