How did world war 1 the 18th amendment get ratified

Besides freeing slaves, harriet tubman served her country in what three ways? a. spy b. secretary c. scout d. artillery supplier e. nurse

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.

What deadly disease cost many workers their lives before dr. william gorgas found a treatment?