The invention of the cotton gin allowed for the production of cotton to skyrocket in the south, which is why it turned to more slave owning and plantation society. The greatest influence on agriculture in the south was the invention of the cotton gin.
Answer:
d. To engage the reader with a current event
Explanation:
The writer begins with Obama's reinstallation of solar panels which is a more recent event so as to engage the reader with a current event. This introduction tells the reader that there is something happening presently. Subsequent references emphasize that this current event has its root in prior times.
The prior times in this case stands for President Jimmy Carter who first did what Obama was doing presently and President Ronald Reagan who did not have the foresight to do the same thing.
The ruling in McCulloch v. Maryland is significant because it was the very first case that is about federal power. It gave the Congress a clear definition of their power in the constitution, what they can do or can't do. It lays the implied powers of the congress in the Constitution.