During the Civil War, Harriet Tubman helped the Union cause by
fighting in battles.
working on plantations.
spying on the enemy.
bringing food to troops.

C because she was spying and then bought slaves to get saved

Explanation:

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on