Which of the changes described below would be the most likely reason for a
$
40
$40dollar sign, 40 billion increase in Bloominonionland's real GDP?

the us constitution is a living document, meaning that it can be changed over time as the country changes.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.

the exclusive possession or control of the supply or trade in a commodity or service.