There are no countries in the US.
On the borders of Arizona, New Mexico, Utah and Colorado--"the four corner states".
The four US states that have active volcanoes are Washington, California, Hawaii and Alaska.
The last four states to secede were Tennessee, North Carolina, Virginia and Arkansas. The border states were Kentucky, Missouri, Maryland and Delaware, later joined by the new breakaway state of West Virginia.
South Carolina, Mississippi, Florida, Alabama
At the beginning of the Civil War, the Union had 19 states, not including the four border states that did not secede. The Confederacy had only 11.
califonia
No state borders that many other states. The two states that border the most other states are Tennessee and Missouri which both border 8 states. Unless by 'state' you are actually referring to a country. Then both China and Russia border 14 countries each.
Colorado and Utah (at the Four Corners) are the only mountain states. It is also bordered by Arizona, Texas, Oklahoma, and the country of Mexico.
Mozambique.
california
There is no country that satisfies all four requirements.
Altogether, three U.S. states are each bordered by eight other states. Tennessee and Missouri are each bordered by eight U.S. states, and Texas is bordered by four U.S. states and four Mexican states. Tennessee is bordered by Virginia, North Carolina, Georgia, Alabama, Mississippi, Arkansas, Missouri and Kentucky. Missouri is bordered by Tennessee, Arkansas, Oklahoma, Kansas, Nebraska, Iowa, Illinois and Kentucky. Texas is bordered by Tamaulipas, Nuevo Leon, Coahuila, Chihuahua, New Mexico, Oklahoma, Arkansas and Louisiana. In addition, New York State is bordered by six U.S. states, Vermont, Massachusetts, Connecticut, Rhode Island, New Jersey and Pennsylvania, and two Canadian provinces, Ontario and Quebec.
Minnesota shares land borders with four states: Wisconsin, Iowa, South Dakota, and North Dakota.
It is Canada, the United States, Mexico and Panama.
There are four countries that border Czech Republic. Germany, Slovakia, Austria, and Poland.
Wyoming is bordered by a total of 6 US states: Montana, South Dakota, Nebraska, Colorado, Utah, and Idaho.
States that border 7 other states: Arkansas Colorado Kentucky Pennsylvania Wyoming (The states of Tennessee and Missouri border 8 states, which is the most.)