Tennessee and Missouri. They each border eight other states.
Tennessee and Missouri are bordered by eight (8) other states
Russia
Tennessee and Missouri.
Tennessee or Missouri; both share borders with eight states.
Tennessee and Missouri they border eight other states
Both Tennessee and Missouri share borders with eight other states.
Missouri has to be one of them and Tennessee is the other.
Missouri and Tennessee each share borders with eight states.
Tennessee and Misouri both share borders with eight states.
Russia
No state borders 9 other states, the most borders any state has is 8 (Tennessee and Missouri)
Missouri and Tennessee both border the most states, 8.
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.
Missouri and Tennessee are the only U. S. states adjacent to eight other states each.
South Australia :)