No. Not necessarily.
I have 15 ".com" domain names legally registered and I'm a Canadian citizen and resident.
Some TLDs (top level domains) have restrictions, but ".com" domain names don't.
Example: ".ca" domain names have Canadian residency requirements.
But the better known ".com", ".net", ".org", can be registered to anybody on earth.
Dot-Com means commercial. Worldwide online.
So, "if a website address contains .com" then no, there's no reason to assume that it's American.
A "WhoIs" lookup on the domain might help find information about who owns the domain name.
com means web address or cumershel.
.com
The web address of the Poughkeepsie-Highland Railroad Bridge Com is: walkway.org
It means "commercial", It is what we call a "top level domain" address, and it used to be a way for a web site to convey its publishing intent.
gtx0.com
The web address of the Gallery 263 is: http://www.gallery263.com
The web address of the American Legion is: http://wilegion.org
The web address of the American Village is: http://www.americanvillage.org
The web address of the Galloping Goose Historical is: http://www.doloresgallopinggoose5.com
Its called as Address Bar :)
it is called the domain
The web address of the American Precision Museum is: www.americanprecision.org