What does a national bank entail

In the United States, a national bank is a commercial bank. The comptroller of the currency of the U.S. Treasury will charter a national bank. ... Internationally, "national bank" is synonymous with "central bank," or a bank controlled by the national government of a country

b

explanation:

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.