The last one and I'm pretty sure the second one
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:The Ghana Empire (c. 300 until c. 1100), properly known as Wagadou (Ghana being the title of its ruler), was a West African empire located in the area of present-day southeastern Mauritania and western Mali. Complex societies based on trans-Saharan trade in salt and gold had existed in the region since ancient times,[1] but the introduction of the camel to the western Sahara in the 3rd century CE, opened the way to great changes in the area that became the Ghana Empire. By the time of the Muslim conquest of North Africa in the 7th century the camel had changed the ancient, more irregular trade routes into a trade network running from Morocco to the Niger River. The Ghana Empire grew rich from this increased trans-Saharan trade in gold and salt, allowing for larger urban centres to develop. The traffic furthermore encouraged territorial expansion to gain control over the different trade routes.
When Ghana's ruling dynasty began remains uncertain. It is mentioned for the first time in written records by Muḥammad ibn Mūsā al-Khwārizmī in 830.[2] In the 11th century the Cordoban scholar Al-Bakri travelled to the region and gave a detailed description of the kingdom.
As the empire declined it finally became a vassal of the rising Mali Empire at some point in the 13th century. When, in 1957, the Gold Coast became the first country in sub-Saharan Africa to gain its independence from colonial rule, it renamed itself Ghana in honor of the long-gone empire.
Explanation:
Artisans organized medieval crafting guilds for a very good reason - it was mostly because it benefited themselves. They found out that if they stuck together and helped each other out in certain times, it was beneficial for them as they could earn more and have less "stress" with not having jobs or enough equimpent or knowledge.
The Hudson River School was an American art movement created by landscape artists influenced by romanticism.
Massachusetts formed a board of education for the purpose of creating public school.
