T-ARA, along with many celebrities and broadcasters came together to launch Real Korea, which is an entertainment cultural index. The event attracted many real politicians, along with a Jeong Han Yong who is best known for his role as the executive advisor to the President in Iris.

Coming this June, an entertainment cultural index dedicated to Hallyu will be released and a ceremony took place to celebrate. Many celebrities such as Davichi, Julien River and broadcasters such as KBS all made their way to the event.
T-ARA was invited due to their strong and recent success in America and said,

We hope to lead the Hallyu wave and keep it growing in the media

Eunjung and Jiyeon were not present for this event.

Sidenote: So far IRIS is affiliated with Big Bang, SNSD and now T-ARA.
Sidenote 2: Hallyu is a worldwide unification and spread of Korean entertainment and culture to the outside their own country.–It’s what makes Korea unique.

Source: Artnews and Diadems