In OsmAnd you can download map data for use offline. In the same download page for thr map data there’s also a download for Wikipedia data.
Download data is per country, so someone just bundled all the articles that have GPS coordinates withing the bounds of each country, and you can download all those articles for offline use in the OsmAnd app.
I’m currently hanging my hat in America. I’m not in the US.
It doesn’t matter where I am. That doesn’t affect thr really that conflating the US with all of America is rude to the vast majority of the population across two continents.