Final answer:
Newspapers began to strive for impartiality due to the ability to attract more readers and to serve a broader geographic region. The practice of objective journalism gained prominence in the early 20th century with the aim of impartial and accurate information dissemination, leading to a larger and diverse readership.
Step-by-step explanation:
More newspapers began to strive for impartiality in their news coverage for several reasons. Notably, newspapers found that adopting a more impartial stance allowed them to attract a broader audience, which in turn led to an increase in readership. As transportation and communication improved, newspapers could distribute to a wider geographic region, compelling them to cater to a diverse audience with varied interests and viewpoints. The imperative to remain relevant and maintain a large reader base amid technological changes and a proliferation of news sources likely played a role in driving this trend towards impartial reporting.
Journalistic principles evolved significantly throughout American history. Early newspapers often reflected partisan viewpoints and were closely tied to political parties or movements. However, the emergence of objective journalism in the early 20th century marked a transformation in how news was reported. Publishers like Adolph Ochs of The New York Times pioneered a model of journalism that emphasized reporting over sensationalism or bias. This model of journalism aimed at promoting impartiality, accuracy, and transparency, values that were aligned with the informational model introduced during the Progressive Era and continued to play a key role in the ethos of journalism.