What two things did Toussaint help accomplish for Haiti?

Worked to end slavery, formed an army

Explanation:

Standing steadfastly, he worked to end slavery and win the freedom of Haiti from Colonial forces, France and Spain. Formed an army of former French and Spanish slaves and deserters, he trained his followers in guerrilla warfare and effectively ended slavery in Hispaniola by 1795

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".

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