Is The Workplace inclined more towards the US?
Yes, and no. :-) The Workplace is inclined towards whatever the users choose. See also: The Workplace is a worldwide site.
The Workplace seems inclined towards the US, but that only represents the underlying demographics of the users, as majority of the users here, and in particular, the most active users, are Americans. You would naturally expect people to ask questions on issues in their immediate surroundings, and since that happens to be the US for most of the users here, majority of the questions are US-centric.
You would have noticed that most of the questions here are focused on an IT Workplace, also for the same reason. We do not see more questions pertaining to taxi drivers or construction workers, mainly because we don't have too many (any?) users belonging to those professions here.
If the demographics of the site users change, then you could expect the site's inclination to also change accordingly.
Someone from another country has to specify the country name ...
This used to be a problem a couple of years ago, but there has been steady progress on that front. Edits being made to tag questions with united-states are increasing, and users asking such questions are also being asked to specify their location.
Interestingly, the united-states tag with 403 questions is the top country tag, followed by united-kingdom with 271 questions and india with 160 questions. (at the moment of this writing)
... or else the question is called locale specific.
If it has happened, it was a mistake. Bring such questions to meta. The custom close reason states:
Questions seeking advice on company-specific regulations, agreements, or policies should be directed to your manager or HR department. Questions that address only a specific company or position are of limited use to future visitors. Questions seeking legal advice should be directed to legal professionals. For more information, click here.
A question can be closed for being a company-specific or a position-specific issue. Going by the reasoning in jmac's meta post, it is an overreach to apply this close reason to issues that apply to an entire country.