Who was given the nickname of "Moses" in the United States?

In 1849, Harriet Tubman escaped from Maryland to Philadelphia, through the Underground Railroad, an elaborate and secret series of houses, tunnels and roads set by abolitionists and free and former slaves. The next year she returned to Maryland as an abolitionist to rescue her sister and her sister’s children. In 1851, she rescued her brother and two other men from Maryland. She helped about 300 slaves, including three of her brothers, their wives and some of their children, escape through the Underground Railroad over the next decade, traveling to the South about 18 times. She travelled by night and in extreme secrecy and neither was caught nor lost a slave. She became popularly known as “Moses” as she led more and more people out of slavery. Tubman volunteered for the Union Army as a cook and a nurse during the Civil War. Tubman died on March 10, 1913 of pneumonia. She was buried at Fort Hill Cemetery in Auburn, New York with military honors.