No. Bitcoin can not be stable, because it is not controlled by anyone and depends only on user activity.
Is that what you think? In my own experience since i started use bitcoin in my daily transaction and see's what really happens on bitcoin i think 1 country had a full control of the price of bitcoin thats why the price decrease and increase that fast what do you think
I would rather not think of this on a country basis but I do agree that such things are true since the population using bitcoin is a very small fraction of the entire world and hence they cant influence the price to change by huge amounts in a single month. So maybe there are some underground operations going on and the prices are being pumped by specific countries.
Full control? I doubt it, manipulate maybe, but bitcoin has spread widely over the world which makes it balance in order to avoid big manipulation. You know, even a country that you mean start to dump bitcoin price fall down below $700, than it will be pleasure for others to buy bitcoin at cheaper price and it will climb up again. And, I don't think a country, it just some people who lives on that country and people won't do something stupid to ruin their bitcoin investment.