>>64282022
The Mongols once invaded the Holy Roman Empire's borders, but their supreme ruler was killed by a trebuchet used by the Song Dynasty army during the Battle of Diaoyucheng in China. This led to the withdrawal of most of the Mongol forces that had invaded Europe and the Middle East, sparking the largest civil war in Mongol history as a struggle for power.

The Mongol invasion of the West took place in the 13th century AD. Europe in the 13th century was very backward and poor. Even the Eastern Romans and Turks called Western Europeans barbarians. The Eastern Roman Empire was just an ordinary country in the eyes of the Mongols because they had seen China, which was richer and more powerful than the Eastern Roman Empire.

In fact, even with only a small number of troops stationed in the Middle East and West Asia, the Mongol army was able to maintain regional hegemony for a long time. The Mongol army once fought against the Eastern Roman Empire and easily defeated the Eastern Roman army in a single battle. However, the majority of the Mongol army engaged in intense fighting with the Southern Song Dynasty for forty years, making the Mongol army's battles in China extremely difficult.