As you read from Harriet Tubman conductor on the underground railroad notice of references to Canada and Moses as well as the Tubman’s singing to the forbidden spiritual How did Harriet Tubman gain access to the enslaved people whose freedom she fought four ?
What do these ideas and actions symbolize to the enslaved people to whom Harriet Tubman signaling?

In addition to leading more than 300 enslaved people to freedom, Harriet Tubman helped ensure the final defeat of slavery in the United States by aiding the Union during the American Civil War. She served as a scout and a nurse, though she received little pay or recognition.She was an important figure in the Underground Railroad. Tubman helped more slaves escape to freedom. Her motto was, “We got to go free or die. And freedom's not bought with dust.” She lived by this and sacrificed everything to follow it.

Explanation:

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;

these civilizations were located around fertile rivers, where they could produce an abundance of crops