>The only unique thing about America is free markets
This is less unique than the dollar being the dominant reserve currency and dominant currency for settling international trade.
This is less unique than the dollar being the dominant reserve currency and dominant currency for settling international trade.
You appear to be putting the cart before the horse.
The dollar isn't dominant in international trade because the domestic market is free, like the above user was referencing. The dollar has been the dominant reserve currency and currency for international trade since it overtook the pound for both of those functions in the mid 20th century, which didn't coincide with the US having a free market.
Also, I wasn't make any causal relationship in my comment, like you seem to be implying. The fact that USD is the dominant reserve currency and dominant trade currency is unquestionably more unique than having free markets, considering that the US is truly completely unique in both of these regards, while it is not nearly as unique in having a free market.
The little "thing" or status of having reserve currency has allowed the US to enjoy lower international borrowing costs than anywhere else in the world. This has immensely benefited the US, in facilitating ease of borrowing with relatively low interest rates and by facilitating lower exchange rate risk in borrowing than any other nation.
And those were not based on free market choices, as the UK would have been just as much free, but it was a devastated economy in a small country.