Question

This was the principle that a state government can declare a law of the national government invalid within the borders of the state

Answer 1

The correct answer is Nullification Crisis

The period of US history between 1815 and 1865 is marked by two distinct events: the beginning of American westward expansion and the growing political, social and economic divide between the northern and southern states on controversial issues - especially on slave labor - culminating in the American Civil War, which began in 1861 and extended until 1865.