I think that it is C. White Americans cuz the US hadn't fully come to terms of different ethnicities be given the same respect.
Hope it helps yah ... 。◕‿◕。
I think it's because slavery costs less...just a guess.
The external borders of the Empire did not change noticeably from the Peace of Westphalia – which acknowledged the exclusion of Switzerland and the Northern Netherlands, and the French protectorate over Alsace – to the dissolution of the Empire