Although the United States is not as great of a country as it once was, it's still way way way better than many other countries. It's still seen as the land of opportunity although the land of opportunity for whom exactly? There are people all over the world that are fluent in English and can write in English. You know why? Because they want to travel to the USA, maybe stay in the USA for awhile, maybe do business in the USA, and maybe immigrate and live in the USA permanently. Many Americans in California know a little Spanish because it helps them keep their jobs. And that's it. No need to learn French if you have no intentions of staying in France for an extended period of time or German or Russian or any other language. People spend time and put an effort into learning things that will benefit them. Also, European countries are surrounded by countries of people who speak a different language. The USA has Mexico to the south (Spanish) and Canada to the north (English).
Living in the USA