Which of the following is NOT a aim of the European Union?

The aim of the European Union includes various objectives that promote economic cooperation, social progression, and political stability among its member states. One of the main purposes is promoting peace, which is foundational to the EU's creation after World War II, aiming to ensure that such a conflict would not occur in Europe again.

Facilitating free movement of workers is another key aim of the EU. This allows individuals to move freely between member states for work, enhancing labor exchange and helping to improve job opportunities across different regions.

Agricultural subsidies also fall within the EU's aims as they support farmers and ensure food security within the region, helping to stabilize agricultural markets and protect rural communities.

However, establishing a military alliance is not a central aim of the European Union. While there are aspects of security cooperation and policies addressing defense, the EU is primarily a political and economic union and does not function as a military alliance like NATO. Thus, it is correct to identify the formation of a military alliance as not being an aim of the European Union.