Which factor that contributed to the fall of the byzantine empire is the author describing in this passage?
a. invasion of ottoman turks
b. impact of the plague on population
c. attacks by muslim empires
d. effects of justinian code

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.

mint more silver currency sorry its probably to late.