Which nation.
There is no limit. They can have as many states as they desire.
Forty six states do not begin with A.
The United States is one nation of many that exist on earth.
50 States, Washington DC.
2 years after
None. There are no US states that begin with the letter B.
1
2
Twelve:AlabamaAlaskaArizonaArkansasIdahoIllinoisIndianaIowaOhioOklahomaOregonUtah
12
True
True