Answer:
UR
Step-by-step explanation:
The underground railroad was in fact not a railroad at all but was in fact the route that escaped slaves used to escape from the grasps of the south and enter into the north where they could be free from slavery. The conductor was the homeowner that hid the slaves from bounty hunters that were ordered to chase the slaves down and bring them back to the plantation they came from, stations were the actual houses that the conductors hid the slaves in, the freight was the slaves themselves that were using the underground railroad to escape, and finally the lines/tracks was the route laid down/fixed by abolitionist sympathizers anyway there is my answer hope it helps :)