Final answer:
The era of journalism that lasted from 1789 to 1860 was the Partisan press.
Step-by-step explanation:
The era of journalism that lasted from 1789 to 1860 was the Partisan press. During this time, many newspapers were simply the voices of political parties and openly biased. They served as mouthpieces for political positions, reinforcing pre-existing ideological outlooks rather than confronting them with inconvenient facts.