The US has one dominant language and one dominant culture, but the legal system is complex. There are national laws. There are also 50 states, each with their own sets of laws. There are also laws at lower levels (county, city, etc). There are similarities that hold true, more-or-less, across the nation, but also differences that are relevant to businesses.

For example, the recent battle in California over how "gig economy" workers are classified:

https://en.wikipedia.org/wiki/2020_California_Proposition_22

Or, the problem of figuring out where you can sell your micro-mobility vehicle:

"The classification of ebikes and other forms of transport is a complex matter in the US. There are federal rules and lots of different regulations at state and city level."

https://www.mypodride.com/faqs (see the "PodRide for USA and Canada" section)

The US may be better than in the EU in this regard, but it's also not that different.