"All of the above" are true regarding the Underground Railroad, which is estimated to have helped roughly 100,000 slaves escape to freedom, usually by traveling from the South to the North.
Gerrymander is the answer.
Checks and balances? Did they give you answer choices?
True, the Columbian Exchange is a term for the exchange of crops, animals and disease between the Americas and Europe and Africa. The definition of the Columbian Exchange is "the widespread transfer of animals, plants, culture, human populations, technology and ideas between the African and Afro-Eurasian hemispheres in the 15th and 16th centuries, related to European colonization and trade after Christopher Columbus' 1492 voyage."
