Answer:
Because it was very difficult to get.
In 1849 Tubman's owner<span>, Edward Brodess, needed to sell </span>slaves<span> in order to cover his debts. ... When </span>her<span>prayers </span>did<span> not work she changed it to: “Oh Lord, if you ain't never ... They </span>did<span> not want to leave traces, all they </span>wanted<span> was a total break from their ... </span>Harriet<span> had already resolved to </span>free<span> herself and after making sure </span>her<span> ...</span>
