Reaper and steel plow were the machines invented by Cyrus McCormick and John Deere that made large-scale agriculture possible, especially on Midwestern prairies.
B) Reaper and steel plow
<u>Explanation:</u>
In the 1800's people used to do all the chores with their hands hence, it made farming a tough job and a lot of time consuming activity. During the industrial revolution, Cyrus McCormick invented a mechanical reaper, which would help reap big farms in very less time.
The steel plow played a very important role in the industrial revolution as the wooden plow used to be weak but John Deere's invented steel plow was strong and broke soil easily.
Answer: They did not adequately protect Ethiopia.
Explanation:
Emperor Haile Selassie of Abyssinia (modern day Ethiopia) was forced to flee his country when Italy under Mussolini invaded it in 1935 as part of Mussolini's plans to gain more colonies in Africa.
Abyssinia was a member of the League of Nations and expected the League to sort the matter out. The League responded by imposing sanctions on Italy but the main member states such as Britain and France made deals with Italy and undermined the blockade.
Italy completely conquered Abyssinia and this disappointed Haile Selassie who thought that the League would have done more to protect a member state from agrresion.
Where are the following ?
Because, the Persians felt that their army could outnumber Greece, also because they might not have known what they were getting into when they attacked the Greek city-states. Hope that helped :D