Executive,legislative,judicial
If you are asking what 9/11 was about, it was the day when the twin towers got hit by 2 planes, and was stated as a terroist attack.
In a dramatic televised address to the American<span> public, President John F. Kennedy announces that the Soviet Union has placed nuclear weapons in </span>Cuba<span> and, in</span>response<span>, the </span>United States<span> will establish a blockade around the island to prevent any other offensive weapons from entering Castro's state.</span>
Answer: the invention of cotton gin
Explanation:The cotton gin refers to a a machine that sets aside cotton fibers from their seeds. Therefore, the invention of the cotton gin transformed the cotton industry in the United States and demanded cheap labor force, which led to the rise of slavery in the South and to the American Civil War later.