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: Marbury v. Madison: denied the Supreme Court the right to rule on the constitutionality of laws
The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
One of the dilemmas Spain faced regarding the new colonies established by them was the powerful international presence of the Spanish crown in those new territories against the cost of maintaining that presence.
It is well known that the Spanish conquerors wanted to exploit the many raw materials and natural resources in their colonies to enrich the Spanish crown. However, there was an implicit cost in this feat. Indeed, a high cost it was.
Furthermore, the fear Spanish had of possible occupations by French or English settlers of territories such as Florida, made them accept the presence of Native American Indian tribes like the Seminoles. trying to protect its large peninsula.
Answer:
Option: It reduced the amount of excavation required to build the canal.
Explanation:
By creating Gatun Lake during the construction of the Panama Canal reduced the excavation time and money because it provided a water passage, between the Atlantic Ocean and the Pacific Ocean. The canal permits ships from both sides to enter and reduces the time of journey. Gatun Lake is an artificial lake one of the largest in its time when it was built.
Manifest Destiny, Americans felt it was a "God-given" right.
