explain the uncertainty that existed in 1854 concerning the future of the balance of power between free and slave states.

Due to 11 free states and 10 slave states.

Explanation:

There was a great uncertainty that existed in 1854 which concern the future of the balance of power between free and slave states because there are 11 free states and 10 slave states. The numbers have little difference so there is great certainty about the balance of power that which would rule over the country i.e. free states and salve states. No one knows what was the outcome of this uncertainty.