These is confusing i don't understand this

A) Ethnic division created a massive inferiority between Caucasians and African-Americans. It lead to many wars including the Civil War (April 12, 1861 – April 9, 1865.)

B) Maritime empires had a major role in slavery and ethnic division mainly because they were of the first to purchase slaves from the African countries.

C) The Land Based and Maritime empires are similar in the way that they both had an influence on the division and segregation of the people In almost every European country and also the new world discovered in 1492.