That's some mighty sculpture. However, I hate people like Ghengins Khan being celebrated like that. He was a mass murderer, a mass rapist and a mass pillager. One of the worst who ever lived. He is one of the worst examples of what's wrong with our species. Nothing good or even lasting resulted from his conquests. Just a lot of death, mayhem and devastation before his empire splintered into countless small ones that were defeated by their neighbors gradually over the next few centuries. The tradition of despotism in Russia may have something to do with the Mongol conquest and Russians having to live under their yoke for two centuries. Even Novgorod in the far northwest had to pay tribute to the Mongols despite the Mongols never occupying the city.

Let the Mongolians keep their statue, though. They haven't got much else.

The Huns who were also a people living in the steppe who tried to conquer Europe. But that didn't go very well. Back in the 5th century, Europe was forested and was basically a decentralized (as in not under a single empire - except for the territories belonging to Rome) network of stone fortifications that had considerable depth. The westernmost battle Attila fought was in the Catalaunian plains in France where he was defeated.

Much later, the Mongols wanted to do the same. They didn't try because Ögedei Khan died (of alcoholism) and the chiefs had to ride back to the Mongol capital for the funeral. But they would've been routed eventually for reasons similar to why Attila was eventually driven away. A Mongol tyumen made up of 10,000 soldiers had 100,000 horses and they needed nine square kilometers of grassland for grazing per day to survive. Their horses would've starved and the horseless troops would've been picked off by heavy European knights if they had tried conquering our continent.