What was the main benefit of a single european currency? elimination of confusion for foreigners. ease of purchasing industrial goods between nations. the complete elimination of both exchange-rate risk and currency conversion costs within the european union. cooperation on policies concerning education, environment, and social policies.

The complete elimination of both exchange-rate risk and currency conversion costs within the European Union.

Explanation:

With the European Union economic integration, trade barriers were eliminated which allows to have one big market where there is a flow of resources, products and a lot of options for consumers and having one currency is beneficial because it allows people in all the countries to have very similar prices as they are all using one currency and it also avoids problems for the producers with exchange rates that could generate problems and high costs for them.

they work in some type of way

answer; no individual buyer or seller has any significant impact on the market price;