In a well-composed essay, explain why the Mongols' attempt to bring so many cultures under the control of a single empire was the cause for its great strength. Then explain how this combination of cultures led to its eventual downfall.

The Mongol Empire, one of the largest in history, was known for its military prowess, extensive territories, and diverse cultures. The empire's strength was largely due to its ability to bring together a multitude of cultures under a single rule. This diversity was a source of strength for several reasons.

Firstly, the Mongols were able to draw upon a wide range of skills, knowledge, and resources from the various cultures they conquered. This included military tactics, technological innovations, and economic resources, which all contributed to the empire's strength and expansion.

Secondly, the Mongols were known for their tolerance of different cultures and religions. This policy of tolerance helped to maintain stability within the empire, as it reduced the likelihood of rebellions and resistance from the conquered peoples.

Thirdly, the Mongols implemented a system of governance that allowed local rulers to maintain some degree of autonomy. This system, known as the "yassa", helped to ensure the smooth administration of the vast empire, as it allowed for local customs and laws to be respected.

However, this combination of cultures also led to the empire's eventual downfall. The diversity within the empire made it difficult to maintain a unified identity and loyalty to the Mongol rule. As the empire expanded, it became increasingly difficult to control and administer the vast territories and diverse peoples.

Moreover, the Mongols' policy of tolerance and autonomy allowed for the preservation of distinct cultural identities within the empire. Over time, these distinct identities began to assert themselves, leading to internal divisions and conflicts.

Finally, the death of the Mongol leaders often led to power struggles and civil wars, as different factions vied for control of the empire. These internal conflicts, combined with external pressures, eventually led to the fragmentation and downfall of the Mongol Empire.

In conclusion, while the Mongols' ability to bring together a multitude of cultures under a single rule was a source of strength, it also contributed to the empire's eventual downfall. The diversity within the empire, combined with the challenges of administering such a vast territory, ultimately led to internal divisions and conflicts that weakened the empire.