EU integration refers to the process of unifying European countries to promote economic, political, and social cooperation. This involves creating common policies and regulations that member states agree to follow, which helps facilitate trade, travel, and communication across borders. The goal of EU integration is to enhance stability and peace in Europe, especially after the conflicts of the 20th century. Key institutions like the European Commission and European Parliament play vital roles in this process, ensuring that member countries work together effectively while respecting their individual sovereignty.