In what ways did the establishment of mill towns in the
northeastern United States rely on earlier
economic and technological developments?
(plz help)

whose power in the senate is equal to the power of the speaker of the house?

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.

they died because of a disease during the first spanish colonies.