No sovereign government will allow any foreign currency (including USD/bitcoin) to circulate on domestic market in a significant scale, since that will make all the monetary policy of their central banks obsolete
US so far have succeeded in making most of the petroleum trade in dollar, but that is also accomplished by lots of wars in middle east and still there are countries trying to escape that system
That's a good note as more countries stop relying on the US dollar as the mechanism of trade for petroleum trading, the importance of the US dollar as the means to exchange goods and services decreases.
We have seen some agreements being established amongst different countries to trade with their own currencies amongst each other and bypass the US dollar from China, Europe, Latin America and Asia but for now the US is still recognized as the lingua franca of oil trading.
Thanks for info and resources, yes I was thinking like this, if countries stop using dollar then its value will be declined tremendously and it will have bad effects on U.S economy but not sure about the effects on other countries economies.
It would depend on how tied they are to the US economy, countries that are less reliant on the US will experience less correlations than those with strong bonds, example Canada US trade tends to follow each other economically, except when you get a nice oil boom and Alberta acts as the engine of growth keeping the economy in good shape, or Canadian Banks don't own Subprime and take less risks so don't get burned as badly in a financial crisis, otherwise their tends to be fairly similar correlations.
On the other hand countries like Saudi Arabia, Venezeula, Qatar which do not trade as often with the United States except in oil resources would feel less effects from the US economy tanking directly but would feel some of the effects from the changes in commodity prices such as oil.
In the cases of Venezeula Saudi Arabia and Qatar they could easily enough move their oil to China, while Canada would have pipeline issues and be less capable of doing that, (The Brent Price vs West Texas Intermediate), so that helps to determine the level of effect it has on their economy and the % of trade they have with another country and their reliance on them are correlated.
Trade is a double edge tool an isolated nation like North Korea in theory has no dependance on other countries trade (But in exchange most people live like crap as we keep hearing) Versus a small open economy that is dependant on trade and takes a serious hit when other countries have problems like the EU news we keep hearing about.
Contagion is a pain.