Answer: one good way they could avoided it's downfall was a better ruler
The the Byzantine Empire tolerated Christianity this led to greater unification in the empire since many regions that had previously been persecuted were free to engage with society.
Answer: Sacajawea was born in 1788 near the salmon river in what is now Idaho. She was kidnapped in 1800 by the hidatsa tribe, enemies of the Shoshone Indians, during a Buffalo hunt. In 1804, French trader Toussaint Chardonneau bought or was given Sacajawea as payment for a gambling debt.
Explanation: Hope this help :)