Missouri and maine were admitted together with which decisions involving slavery?

maine and missouri would be slave states.
maine and missouri would be free states.
maine would be a free state, and missouri would be a slave state.
maine would be a slave state, and missouri would be a free state.

Maine would be a free state, and Missouri would be a slave state.

The correct answer of the given question above would be the first option. Life would have been different in the 1800s if the steam locomotive had not been invented in a way that products would have been more expensive. It would have been more expensive because the products would take more time to transport, thus the transport process would cost more.