Tennessee or Missouri; both share borders with eight states.
No state borders 9 other states, the most borders any state has is 8 (Tennessee and Missouri)
Russia
Tennessee and Missouri they border eight other states
Tennessee borders the most other U.S. states, with a total of eight neighboring states. It shares its borders with Kentucky, Virginia, North Carolina, Georgia, Alabama, Mississippi, Arkansas, and Missouri. This extensive connectivity makes Tennessee a significant geographical crossroads in the southeastern U.S.
Missouri and Tennessee are the only U. S. states adjacent to eight other states each.
South Australia :)
Both Tennessee and Missouri share borders with eight other states.
Tennessee borders eight other states: Kentucky, Virginia, North Carolina, Georgia, Alabama, Mississippi, Arkansas, and Missouri.
Missouri has to be one of them and Tennessee is the other.
Madhya Pradesh is the state in India with 9 borders with other states such as Gujarat, Maharashtra, Telangana, Chhattisgarh, Andhra Pradesh, Vidarbha, Bundelkhand, Uttar Pradesh and Rajasthan
China borders the most other states in the world with 14 neighboring countries. These countries are Mongolia, Russia, North Korea, Vietnam, Laos, Myanmar, Bhutan, Nepal, India, Pakistan, Afghanistan, Tajikistan, Kyrgyzstan, and Kazakhstan.