How did the Yasa help Genghis Khan unite the Mongol Empire? It provided a code of laws that kept peace and order in the empire.
It developed a written language that improved communication in the empire.
It enabled record keeping that maintained information in the empire.
It rewarded loyalty and skill that kept power concentrated in the empire.

"the sepoy rebellion was the result of many, many influences and stressors on the cultures of india living under british rule. in britain, it's called the sepoy mutiny on the indian mutiny, but in india, it's called the first war of independence.

the main reason is concerned to the british paramountcy , the belief in british   dominance in india political, economic and cultural life had been introduced in india about 1820."

"they were forced to grow crops that benefited the colonizing nations instead of feeding their own people."