The purpose of the Berlin Conference of 1884-1885 was to put some order in the chaos of the colonization of Africa. It divided the continent up into specific areas for colonization.
The main reason was the South wanted to preserve slavery. The North wanted to abolish it. If you want some other reasons than slavery, let me know, and I will do my best to add more to this answer.
Answer:
D
Explanation:
The fall of the city removed what was once a powerful defense for Christian Europe against Muslim invasion, allowing for uninterrupted Ottoman expansion into eastern Europe.