Have any places seceeded for your nation and are there any that want to? Also, if your nation is a federation, how would they go about it?
In ArghNeedAName, any province of the federation can seceded if they hold a referendum and an absolute majority of all registered voters (not just a majority of those who vote) vote in favour. So if 75% of voters turn out, 66% of them will have to vote yes.
Only one state has ever sucessfully seceded - Areland in 1930. However, a civil war broke out because of angry unionists in the west, so the Treaty of Mumblin was signed, which partioned Areland and allowed West Areland to return to the union.
West Areland remains strongly divided 60/40 between unionists and secessionists, which has led to a number of terrorist groups being founded by both sides. The tension has calmed down in recent years.
Some other states have secession movements, but they are pretty tiny.

