Final answer:
Countries must give up economic policies autonomy, social policies autonomy, political sovereignty, and military autonomy to be members of an economic union. In some cases, countries may need to give up certain military autonomy, such as participating in joint defense.
Step-by-step explanation:
When countries join an economic union, they often give up some political autonomy in order to promote economic integration and cooperation. Some examples of political power that countries must give up to be members of an economic union include: Economic policies autonomy: Countries may have to coordinate their economic policies, such as setting common interest rates or adopting a common currency.
Social policies autonomy: Countries may have to align their social policies, such as labor regulations or welfare systems, to ensure a level playing field for all members. Political sovereignty: Countries may have to transfer some decision-making authority to supranational institutions, such as the European Union, which can impose decisions that affect all member states. Military autonomy: In some cases, countries may need to give up certain military autonomy, such as participating in joint defense or security arrangements, to ensure collective security within the union.