Dark matter is a hypothetical form of matter that does not interact with light or other electromagnetic radiation, making it difficult to detect directly. It primarily interacts with the universe through its gravitational effects.
Given its elusive nature and our current understanding of dark matter, it is not possible to accurately determine how much dark matter would be needed to "destroy" the USA or any other specific object or region. Dark matter does not typically interact strongly with normal matter, and its gravitational effects are usually observed at larger scales, such as on the galactic or cosmological level.
It's worth noting that dark matter is thought to be distributed throughout the universe, including within galaxies like our Milky Way. The presence of dark matter has not posed any direct destructive effects on celestial bodies or structures that we know of.
If there were a sudden concentration of an enormous amount of dark matter in a localized region, it could have gravitational effects that might disrupt the stability of structures or objects nearby. However, such scenarios are purely speculative, as our current knowledge of dark matter and its properties is limited.
It's important to approach the subject of dark matter with scientific caution, as many aspects of it are still being actively studied and researched by physicists and astrophysicists.