What is one factor that led to the historical development of mongol empire?

The Mongol Empire: Expansion of the Mongol empire from 1206 CE-1294 CE. During Europe's High Middle Ages the Mongol Empire, the largest contiguous land empire in history, began to emerge. ... The empire grew rapidly under his rule and then under his descendants, who sent invasions in every direction.

Explanation:

it is the dominance of   the spanish language and roman catholic region in mexico, french being the official language of several african countries, and the existence of a western-style government in south asian countries

u.s.a

china

india

and

japan