The correct answer should be creates employment opportunities and improves standard of living
It doesn't make the countries self reliant since they rely on trading with other countries. It doesn't remove language barriers since the countries still have to operate in their own languages which is often translated to a common language like English or French, or it is translated to the languages of the parties involved in the trade. It helps with employment and increasing the standard of living because countries focus on producing goods that can be exported so more people are involved in production and trade in order to ensure the demand is fulfilled.
