The Middle Passage was the crossing from Africa to the Americas, which the ships made carrying their 'cargo' of slaves. It was so-called because it was the middle section of the trade route taken by many of the ships.
He is referencing the issue of slavery and the threat of it being outlawed in the United States. This fear was very real for southerners after President Abraham Lincoln was elected president in the election of 1860. Southerners feared that he would outlaw slavery across the United States.
This issue greatly affected the southern states, causing several of them to secede (leave) the US in order to form their own country. This would be called the Confederate State of America and this faction helps spark the Civil War.
Answer:
the policy of extending the rule or authority of an empire or nation over foreign countries, or of acquiring and holding colonies and dependencies. advocacy of imperial or sovereign interests over the interests of the dependent states. imperial government; rule by an emperor or empress.
The factors in a country that inspire the person to leave home. So, B. is your answer.
