Well, seeing that “tequila” by definition refers to a drink from Tequila and the surrounding area in Mexico, that would someone limit other countries ability to produce this drink. Names aside, tequila is made from blue agave, specifically, agave tequilana weber azul. Mezcal, the generic drink, can be made from other forms of agave. That said, there’s a limited climate range to where these plants thrive, so that would hamper competition. Also, other countries just don’t have the tradition of tequila making.
As for whiskey, I know plenty of Irish who would disagree with you. Plus a few Americans who might also take offense. Scotch whisky is by far my favorite whiskey, but bourbon, rye, and other whiskeys can be just as good, if not different.
California has some of the best wines in the world, and even the French will admit to that. Other countries quite noted for their winemaking include the ones Baker mentioned as well as South Africa, Australia, Hungary (famous for its sweet Tokaji Aszu), Italy,Spain and Croatia. Georgia (as in “the Republic of”) also produces some very interesting reds, which resemble no other wines I’ve ever had (and tend to stain your teeth black.)
But to answer the OP, it’s basically a matter of climate for raw ingredients, the quality of those ingredients, tradition and technical know-how.
I prefer Bourbon to Scotch, so no. I say the best whiskey comes from Kentucky. Then Ireland second.
No opinion. I don’t really like gin.
I’m also not a huge wine fan, but my mother is, and she assures me that California wine compares quite favorably with wines from other countries, France included.
Personally, the wine I most enjoyed was an Italian red, whose name escapes me.
What pulykamell said. I thought all tequila came from Mexico.
If you want a real controversial question, ask where the best beer comes from. (I say Northern California, Oregon, and Washington.)