The Goblin city-state located in the western continent obviously didn't have the privilege to refuse the demands made by Holy Dragon Noah, and thus, Noah also gained a vassal presence in the West.
Indeed, just a vassal. Noah did not choose to bring the Goblin city-state under his rule, nor did he intend to relocate it across hundreds of thousands of miles. Although there was such an idea initially, this plan has been canceled.
Mainly, after seeing the goblins, Noah felt he couldn't tolerate these green-skinned creatures; they challenged his aesthetic sense. Noah didn't want these green creatures frolicking under his nose every day.
Thus, he chose to turn a blind eye and would provide military assistance in exchange for the Goblin engineers' technical support for the Holy Dragon's Land.