What was it about the existing railway system in British North America that made it unsuitable for supporting an internal East-West trading system?

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.

to extend a country’s power and influence

a memoir is the correct answer