yes
The Mexican nation.
TEXAS.
Texas
an independent nation
Mexico is directly south of Texas.
dallas Texas
Texas
Texas was an independent nation before becoming a state.
The Republic of Texas
Texas could be defined as a nation, as it is a large group of people that share a common culture, language and possible history. However, Texas is not a state, defined as a sovereign entity, so it is not a nation-state as the term is typically defined. If you defined state instead as a sub-unit of the U.S. then perhaps you could define Texas as a nation-state.
Ten.
Texas