EU9, has become an essential part of the EU. This cluster joined the EU in its third growth phase in 2004, implanting new ideas and cultural diversity into the Union's mix.

The states in EU9 include Hungary, Slovenia, Latvia, Lithuania, Poland, Estonia, Slovakia, Czech Republic, and Malta. These states each have given significant inputs towards furthering the aims of the European Union.

In this respect, understanding the part these nations holds in the EU is important for any study relating to European economics, politics, or international relations.

From their entry, the members of EU9 have given substantially towards shaping the policies of the European Union. Their geographical location provides important strategic edges, turning them a vital part of the EU's defense and security strategies.

Additionally, these countries have significantly contributed to the European Union's economic strength. The EU9's rapid economic growth and willing integration into the European market has led to increased trade with other EU states.

The social contribution of the EU9 is also click here significant. These countries introduce deep historical backgrounds, individual cultural practices, and diverse languages, therefore enhancing the plurality of the EU.

The inclusion of EU9 has also influenced the political dynamics within the EU. With their presence, the power dynamics have changed, with new coalitions and alliances developing.

In conclusion, the contributions played by the EU9 nations are considerable. From economic influence to cultural richness, and from security strategies to political dynamics, EU9 has strengthened the European Union's core strength. As such, an in-depth understanding of the EU9 is essential to fully grasping the subtleties of the European Union.