Why is a system for exchanging currency necessary for international trade

To control the global money supply
To increase trade barriers
To manage price stability and currency risk
To create a universal method for accurate currency exchange

A system for exchanging currency is necessary for international trade for the following reasons:

1. To control the global money supply: Currency exchange systems help regulate the global money supply by ensuring that different currencies are available for international trade. This allows countries to manage their money supply and control inflation rates.

2. To increase trade barriers: Currency exchange systems can be used to impose trade barriers and protect domestic industries. By manipulating exchange rates, countries can make imported goods more expensive, thereby discouraging imports and promoting domestic production.

3. To manage price stability and currency risk: Currency exchange systems help manage price stability by providing a mechanism to convert currencies at agreed-upon rates. This reduces the risk of sudden fluctuations in currency values, which can significantly impact the profitability of international trade transactions.

4. To create a universal method for accurate currency exchange: An international currency exchange system establishes a set of rules and procedures to accurately determine the value of one currency in terms of another. This enables accurate pricing and smooth transactions between different countries, facilitating international trade.

Overall, a currency exchange system plays a crucial role in facilitating international trade by providing stability, transparency, and predictability in currency exchange rates, which ultimately promotes economic growth and enhances global trade relations.