Between 1750 and 1820 America underwent a series of extensive political upheavals in which the press played a pivotal role. Beginning as colonies of Great Britain, America declared its independence in 1776 following a tumultuous ten years of protest against British laws and taxes. After eight years of revolution, Britain agreed to a peace that allowed the newly formed United States to develop its unique governmental system. From the end of the Revolution through to the first two decades of the nineteenth century, Americans transformed their country from a loosely organised confederation of states into a nation with a strong central government and a powerful constitution. In all these developments, a fast-growing newspaper press acted both as witness to events and as an active participant in the political process. As America's public sphere developed and the voice of public opinion became more dominant, the press played a crucial role in shaping this new political world.

On 1 January 1799, Judge Alexander Addison warned in Boston's Columbian Centinel, ‘Give to any set of men the command of the press, and you give them the command of the country, for you give them the command of public opinion, which commands everything.’ Addison wrote his letter to the Federalist newspaper at a time when America's two main political ideologies – Federalism and Republicanism – vied for control of the United States, itself scarcely a decade old.