Temujin (Genghis's origional name) was born in 1162, in the Borjigin tribe. When Genghis Khan was young his father died after getting tricked and killed by a rival tribe and that made him leader after having to kill his brother for it at 9 years old.
Genghis was married at just the age of 16 and then his wife (Borte) got kidnapped by another tride and was given as wife to their cheiftan.
At the age of 20, Genghis was captured by the Taichi'uts, but with help from his sympathetic captor, he escaped.
We must bury him under the river so he is never disturbed by the living.
After he made an army out of the most trusted people he knew, he went to other clans and tried to unite them and anyone who refused would be slaughtered.
You didn't unify, so you die
Soon once Genghis had his army, he went to conquer his greatest enemy. The Chinese. He moved south the Jin dynasty and then moved west to conquer the rest. During his conquest he fought every city in China leaving the everyone, to die.
Even though he conquered China the ones that lived also had equal opportunity to join the government because his people aren't the only trusted and smart people. Saddly Genghis died in 1227 and left his kids to keep the armies strong and then he was buried in peace