Answer:
It appears that you are talking about the Middle Ages so the answer is 'C'. Irrigation goes back to pre-history and the fertile crescent.
Explanation:
Due to the deaths of most of the population, "ordinary farm workers, who had been forced into serfdom previously, shot up by 50%. More bullion among a smaller population meant more wealth across all classes and because the same land was in use and it was now plentiful, it resulted in technological advances as well." - Hank Campbell (found at Science20.com)
About a third of the clergy fell to the Black Death, making answer a. unlikely.
I never found any information stating Peasants migrated into cities for medical care, making answer b. unlikely.
Lower classes benefited from the Black Death economically, therefore c. is my final answer.
Doctors at this time knew nothing about how to cure disease, they also made little to none advancements. Answer d. is very wrong.
False because domestic business is only local. hoped i helped<span />
<span>Amendment XVII. The Senate of the United States shall be composed of two Senators from each state, elected by the people thereof, for six years; and each Senator shall have one vote. The electors in each state shall have the qualifications requisite for electors of the most numerous branch of the state legislatures.</span><span>
That's the exact wording</span>
