The incident that took place in God Valley affected the entire world. When Rocks D. Xebec found out that the Celestial Dragons were on it, he wasted no time in attacking the island.
The Navy could not allow such a thing to happen, so they decided to take down the Rocks Pirates once and for all.The Navy, led by Monkey D.
Garp knew that they could not beat the Rocks Pirates on their own, so Garp decided to ask for help from another great pirate, namely, Gol D.
Roger. The bizarre alliance was successful in defeating the Rocks Pirates. After their victory, the God Valley mysteriously disappeared from the world.Read more on gamerant.com