Title: Getting to Know EU9: The Essential Role it Hold in the EU

Comprising of nine states, EU9 has grown to be an integral part of the EU. This group entered the EU in its 3rd enlargement phase in 2004, implanting diversity and fresh perspectives into the grand unity.

The members of EU9 include Malta, Estonia, Slovenia, Slovakia, Czech Republic, Hungary, Latvia, Lithuania, and Poland. These countries have given significant inputs towards furthering the objectives of the European Union.

Therefore, grasping the role EU9 holds in the European Union is required for any study relating to European economics, politics, or international relations.

From their entry, the states belonging to EU9 have contributed majestically towards shaping the policies of the European Union. Their geographical location provides critical strategic edges, rendering them a considerable 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 eager integration into the EU market has led to amplified trade with other EU countries.

The cultural contribution of the EU9 is also significant. These nations incorporate deep historical backgrounds, distinct cultural practices, and varied languages, thus enhancing the plurality of the EU.

The addition of EU9 has also impacted the internal politics within the EU. With their involvement, the power dynamics have altered, with new coalitions and alliances emerging.

In conclusion, the roles played by the EU9 members are significant. From economic influence to cultural richness, and from security EU9 strategies to political dynamics, EU9 has fortified the European Union's core strength. As such, an thorough understanding of the EU9 is vital to fully grasping the complexities of the European Union.