What were the core principles of the first protestant denominations that led to the period known as the reformation? how did further protestant denominations differ from the original ideas of martin luther?
(need on 2nd question)

(Question 2) Other protestant branches, such as Calvinism, differed from Lutheranism because of their beliefs on predestination. Calvinists believed in predestination while Lutherans believed in salvation by faith.

Explanation:

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.