Final answer:
The euro is a common currency shared by European countries, encouraging economic integration and streamlining transactions.
Explanation:
The euro is a common currency shared by multiple European countries, adopted by 12 nations to streamline financial transactions and eliminate foreign exchange risks.
Notable European countries like Germany, France, Italy, and Spain are part of the Eurozone, where the euro serves as the standard currency for trade and commerce.
By adopting the euro, countries in the Eurozone have created a region with a single currency, enhancing economic integration and facilitating cross-border transactions.
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