Al-Qaeda is the Islamist organisation generally accused of the 9/11 attack.There are lots of conspiracy theories on the internet about who was actually responsible.
Answer:
C. It is a time in American history from the late 18th century until the start of the Civil War.
Explanation:
As per the American history, the Antebellum Period is commonly regarded to be the time before the Civil War and after the Constitution was adopted in 1789. It was associated with the rise of abolition and the country's gradual division between the slavery supporters and abolitionists. The conquest of new territories and western expansion intensified the slavery issue and contributed to the Civil War.
