No two US states share a northern border with Maine.
The Missouri Compromise allowed two new states to be admitted. The two states that were admitted are Maine and Missouri.
I don't know what in is, but the two states would be somethingike Maine and Hawaii or Maine and Alaska.
There are two states in the US that have a city named Portland: Oregon and Maine.
two states that are on opposite coats are Maine and California.
No two US states share a northern border with Maine.
Maine and Hawaii
Vermont and Maine
The Missouri Compromise allowed Maine and Missouri to enter the United States. Maine would be a free states, while Missouri would be a slave state.
Alaska and Hawaii
Maine is located to the northeast of Texas. Conversely, Texas is to the southwest of Maine. The two states are separated by several hundred miles, with Maine being in the northeastern corner of the United States and Texas situated further south and west.
Not counting California, the answer is two states--Oregon and Washington. Just go north up to Canada and take the Queen's highway all the way east to Maine.