In the 1850s, why did many runaway slaves go to canada?

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration

i think the fact that abraham lincoln was a tyrant

or probably like what the other person said from sitting in the chair to get assasinated xd

~batmans wife dun dun