I know how to propose a new SE site on Area 51, but is there any way I can propose a new site in my local language?
Those sites go through the exact same process as any other site, generally with "(in Japanese)" or whatever language appended to the proposal title.
However, we are not currently accepting new proposals for sites in languages other than English. Whenever we reach the point where we're willing to start accepting such proposals again, you will see an announcement on either Area 51 Discussions or our network blog.
You can ask a site if it is English, but it accepts non-English questions as well. It is also possible to suggest a new site about a language, where questions on this language are also allowed.
Non-English Stack Overflow clones are currently forbidden, particularly the simple killing of the pretty ready German Stack Overflow proposal (by @TimPost) cries to the sky. Nobody knows its real reason, although I've heard already various rumors and hyphotheses. My personal, subjective impression is that it was rather a central decision and not a single-sided action from a CM; the CMs are only representing this as part of their job.
Unfortunately, considering that it is their site and their company, I don't think we could do anything with it. The invisible hand will solve finally this problem.
The language of the meta should go on English, and your chances are higher if you mention this in the proposal (or in the relevant discuss Area 51 posts).
The main problem what I can see that monthly around two proposals can be really started, it seems the Area 51 isn't enough well known until now.
- You can't suggest a StackOverflow on language X.
- You can't suggest a non-English clone of any existing StackExchange site on language X.
- You can suggest a new site about language X.
- You can suggest a new site about country/culture X.
The accepted languages of the main site should be X AND English. The language of the Meta should be mainly English. In your place I would prefer English also in the Area51 proposal:
- it helps the cooperation with the Area51 decision-makers,
- you will have sympathisers also from the people not speaking language X, but liking the language/country/culture X.