Imperialism refers to the practice of European powers annexing territory and establishing colonies in Africa and Asia.
The answer (I believe) is A. Amends the Constitution and overturns laws. It's the closest answer but the really interpret the law and decide if it is being either fairly executed or unfairly executed.
It would be difficult and near impossible to see this as a single phenomenon and for it not to be seen as part of a broader process of colonization and imperialism at the time. However, one distinct feature of the colonies in North America was that there was massive migration of Europeans to these colonies whereas in other colonies at the time the migration was not as substantial.
This is false nor an actually question