You can exchange US Dollars at any bank.
If you insist on using US dollars in a retail setting then either they will refuse to accept them or you will get a much less favorable exchange rate. It is inconvenient and costs time and money to accept a foreign currency. The retailer cannot be expected to know what the precise exchange rate is like a bank does. They will err on the side of caution and you loose money.
The Euro is the currency in Spain, so US dollars would not be accepted in the vast majority of outlets.
Spain people are not the same as American money.
The currency used in the country of Spain is the Euro. One Euro is equivalent to around 1.3 American dollars.
$20 of American money would be 16.2153 euros in Spanish money.
money.
Euro is the official money in Spain
The most significant money making activity in the American colonies of Spain was the mining of silver and gold. The Spanish Empire was founded in April 17, 1492.
Euros
.2 dollas
You can to some extensions. You can use American money in Japanese airports. You can use the ATM to withdraw money. However, you can also convert your American money into Japanese money as well. In most developed nations, you must convert your money in order to use it.
The use European money, that is euros
Barcelona in Spain has. the euro as their currency
There were a few issues that American's had with Spain and British. Some of the issues that were brought up were debt, money, land and power.