Final answer:
The European Union accounts for roughly half of the economy of the European Union.
Step-by-step explanation:
The subject of this question is Social Studies. The European Union (EU) accounts for roughly half of the economy of the European Union. The EU is an economic union formed by several European nations to tie their economies together and promote peace. It started as a free trade association, evolved into a common market, and now includes a common currency, the euro, and aims to eliminate barriers to trade and mobility across Europe.