Are there some options? because there is a big number of water bodies in the US:
Lakes (Lake Superior, Lake Erie, Lake Mishigan)
Rivers (Mississippi, Hudson, others)
and many others: swamps, ponds, wetlands, bays....
The Missouri Compromise allowed for Missouri to be a slave state so Maine could be a free state and the union would not be out numbered. However it did not resolve slavery since in the end, there was still slavery and fighting.
It would be all the above
