The correct answer in this case is liberalism.
Socialism is the opposite as it entails (Among other things) the idea of fast changes, if need be with revolution. Neither does utilitarianism talk about social progress through reform.
Libertarians talk exactly about what the question is about; one of the main tennets of liberalism is that they prefer and would like to witness social change through reforms.
The whom did the nobles give some of their lands?
To Vassals
Hope this picture with a fact helps you.
D because they were now aware of challenges that may arise like disease when invading
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Explanation: