Toy original point, the US was based on individual freedoms and rights that simply didn't exist in the monarchical UK system. For much of the US's history the, albeit politically idealized, expectation was that you come here and make your own way. We didn't have a feudal system and didn't depend on a monarch to run many details of our daily life. We have seen more and more of that creep into the American system over the last century or so though, and yes we are coincidentally also running into many of the same issues seen in more socialist European countries today.