How is truth manipulated in 1984?

In George Orwell's "1984," truth is manipulated through the Party's control of information and language, exemplified by the concept of "Newspeak" and the alteration of historical records. The Ministry of Truth constantly rewrites the past to align with the Party's current narrative, ensuring that reality is malleable and subject to the whims of those in power. This manipulation fosters a society where objective truth becomes irrelevant, as the Party defines truth solely based on its interests and Propaganda. Ultimately, the erasure and reconstruction of facts serve to maintain control over the populace, rendering independent thought and dissent nearly impossible.