"The Beginning"
Long time ago, the Goblins were a part of the Horde, but their hunger for money and technology made them to split up. Some became merchants, some rejoined the Horde and some created tribes. So was the Greenthunder Tribe, ruled by Nazz Stonecrown in Silverpine Forest. Nazz's Tribe was the most powerful of all, having great armies and the most advanced technology.
"The Union of Goblins"
During the First Great War the goblins were fighting each other for land and power. Unlike them, Nazz's Tribe wasn't fighting, but improving their defenses. Greenthunder's Base was so fortified that the other tribes couldn't even approach it. In the end of the war, the Alliance Humans from Kul'Tiras attacked the goblin tribes. Knowing that even his clan can't survive the battle, Nazz Stonecrown ordered a temporary alliance between the tribes. Having no choice, all agreed, except Shadowhunt Tribe who believed that an alliance would be a sign of weakness. The united tribes gathered under one name: Goblin Dominion. Having the largest goblin army from Azeroth and the advanced technology the goblins succeeded to push back the humans. In the end of First Great War the Goblin Dominion was disbanded and the tribes returned to their old form. The war remained in goblin history known as The Union of Goblins.
"The Betrayal"
The Second Great War also known as The Betrayal started for the goblins when the Worgens, under the leadership of Arugal Hellcast, attacked the tribes. The Worgens, wolf-human kinds were using dark magic. Knowing of the powerful magics, Nazz Stonecrown formed the Goblin Dominion again, but this time the Shadowhunt Tribe agreed to join. Nazz suspected something but he didn't pay much attention since he had a war to lead. A few months before the Great Second War's Ending the final battle between the Worgens and Goblin Dominion was about the begin. All the goblins and worgens gathered in the east of Shadowfang Keep. Nazz ordered that attack. The Goblin's were winning but then something terrible happened. The Shadowhunt Tribe showed their true face and betrayed the Goblin Dominion. Not knowing what is happening, the goblins of the Dominion began to attack their own forces. This was the darkest day for the Goblin Dominion. After that the Worgens and the Shadowhunt Tribe conquered most of the Silverpine Forest, disbanding the Dominion and destroying the other tribes. And so ended the second war.
"Hero's Rising"
Nazz Stonecrown was never found, nor his corpse. All believed that he was dead. Well, they were wrong. Nazz was very bad injured but he wasn't dead. During the battle he was impaled by Arugal Hellcast with a cursed spear. He fell into a river. When he woke up he found himself in a magic prison guarded by humans. It was Dalaran. Archmage Antonidas knew who Nazz was and imprisoned him for doing crimes against the people of Lordaeron. Some days later, a human knight promised Nazz a "prison break" in exchange of the Goblins technology weapons. Having no choice, the Goblin agreed. Next day the "prison break" was made and Nazz escaped. He ran to the shores where he took a boat which helped him travel to Silverpine Forest. His homeland was nothing more than ashes. He ran to his former city of Greenthunder Tribe. He found out that the city was still surviving. When the other goblins saw him, they thought it's a mirrage, but he wasn't. The Greenthunder Tribe was about to be reborn.
"Curse of the Unholy"
It was in the beginning of the summer and all the tribes were restoring themselves. The Goblin Dominion gathered to fight the Shadowhunt and the Worgens. The battle was about to begin, when another betrayal took place. This time was on the enemy side, Arugal betrayed the Shadowhunt Tribe. Angry, the Shadowhunt assaulted the Shadowfang Keep. They were about to conquer it when another power came to help the Worgens: The Scourge. The Shadowhunt had powerful weapons, but not even that could have stopped the giant abominations and the ravaging ghouls. In a few days the Worgens and the Scourge destroyed the Shadowcrow Tribe. Nazz knew how powerful they are and he called for the Dominion once more. But this time he feared that it wouldn't be enough. All the goblin tribes ran to Greenthunder's fortress. Few hours later, the fortress was attacked by the unholy creatures. The goblins fought with courage, and the courage was the thing that kept them alive. In the end of the war more than half of the goblins were dead, the fortress was ruined but the creatures were defeated. The Goblin Dominion was victorious and it was never disbanded. And so passed the Third Great War.
"The Reborn"
Five years have passed since Arthas united with Ner'zhul. Tired of hiding, Nazz decides to not just restore the Dominion but to expand it. And so rises the Goblin Dominion, more powerful that it ever was, led by Nazz Stonecrown. Having the most advanced technology from Lordaeron and great numbers, the Goblin Dominion is sure it can withstand against any enemy that may stand in their way.