Answer:
overcome the challenge of deciding about further enlargement
Step-by-step explanation:
The World Trade Organization main goal is to eliminate both tariff and non-tarrif barriers in world trade. It has 164 members states, and has been largely successful in this goal.
These achievements, as well as the achievements of other multilateral trade agreements help the European Union overcome debates about further enlargement and integration because not only do they lay the foundation for future economic integration, but also they represent empirical evidence that proves that economic integration is largely benefitial to signing countries.