In the 1700s, Anthony Benezet was a Quaker who organized the Pennsylvania Abolitionist Society. brought the first enslaved workers to Pennsylvania. helped enslaved people escape to freedom in the North. ran auctions where enslaved people were purchased.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

a. the astrolabe could determine the correct latitudinal location of the ship

the northwest ordinance of 1787 guaranteed basic rights for settlers and banned slavery there.