There are many beautiful jewels in the galaxy. Some are simply just much larger than others
—Gertend Helmot, explorer
Asdan Prime was first found by the explorer Gertend Helmot in 350 BBY. It was settled gradually over time. The local people, known as the Asdani, welcome the settlers with open arms, due to their peaceful customs and mindset. The settlers lived in harmony with the Asdani until about 26 ABY when the Yuuzhan Vong invaded and took over the planet with frightening ease.
The Yuuzhan Vong, after securing the planet, destroyed whatever signs of civilization they could find and "Vongformed" the planet. When the invaders were finally repulsed in 29 ABY, all that remained of the planets original inhabitants was a depleted and bedraggled population of former slaves and freedom fighters. However the vast majority of the survivors were Asdani. The Asdani, angered at the invasion and blaming it on the settlers exiled all non-Asdani from the planet.