C. peaceful negotiations
kenya gained their independence from Britain
Ottoman empire and the british empire there more though
Both B and D took place, but if you had to choose one, it would be B. The technological advances made farming much more quicker and easier for a large piece of land.
I know this isn't an answer, but...
Do you have a question? I can't help you if you don't. I don't see any attachments so if you wanted to attach something then you should try to re-do your question maybe.