What do you mean with New Order? Anyhow, any kind of order can be this kind of order you mean this will not unite all the countries in one country and if it will happen (totally impossible) yet bitcoin cannot be its currency. First of all because there are not enough bitcoin to cover all the needs of the economy of such kind of super-country. If your New order will not merge the countries any country will accept to have such coin as a national currency for the simple reason (I am telling only one which is enough) because they cannot own it. And any country will accept to have as national currency a currency which don't own.