Before the panama canal people from East coast of America who wanted to go to Asia had to either sail around south America which took months or sail towards Asia and go around Africa which took even longer. The panama canal was a short cut right in the middle of central America which cut navigation time in half. Hope I helped. :)
Answer:
They helped spread the message of abolitionism and recruited many people to the anti-slavery cause.
I do not see the "the following states". If you put it down in the next 3 mins I will be able to answer
